JP2000135423A - Ozonized water production device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozonized water production device capable of increasing an ozone concn. in the formed ozonized water and also simple in structure. SOLUTION: A partition wall 18 standing upright from the bottom surface is provided at the inside bottom surface of a hollow vessel shaped reactor 8, and the inside of the reactor 8 is divided into a first branch chamber 8a and a second branch chamber 8b by the partition wall 18. The first branch chamber 8a and the second branch chamber 8b are communicated at upward. Moreover, an ejector 6 mixing city water and the ozone and a static mixer 7 connected on the downward of the ejector 6 and other parts are arranged in the first branch chamber 8a, a city water inlet and an ozone inlet of the ejector 6 are arranged at the outside of the reactor 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone water producing apparatus for producing ozone water by mixing tap water and ozone, and more particularly to an ozone water producing apparatus capable of increasing the ozone concentration in the produced ozone water. Related to the device.

[0002]

2. Description of the Related Art It is known that ozone (O ₃ ) has a sterilizing effect and a deodorizing effect. Examples of the sterilizing effect of ozone include the following. The effect of disinfecting food poisoning bacteria and pathogenic bacteria in a short time, the effect of disinfecting and washing hand fats, foods and dishes, the effect of preventing the propagation of pests and the elimination of pests, the use of chemicals and the prevention of phytotoxicity And the effect of maintaining the freshness of the food and improving the taste.

[0003] Bacteria that cause food poisoning are microorganisms that cannot be seen with the naked eye, and specifically, Salmonella,
Vibrio parahaemolyticus, Staphylococcus aureus, and Escherichia coli (O-1
57). The characteristic of these food poisoning bacteria is that they increase explosively due to cell division. However, ozone water (a mixture of tap water and ozone) sterilizes these food poisoning bacteria in a short time, and produces seafood, vegetables and meat. And has the effect of keeping its freshness.

[0004] For example, when a test is performed to compare the state of cucumber sliced in cucumber after washing with tap water or ozone water and storing it in a refrigerator for one week, the cucumber washed with tap water has a yellow center. The cucumber washed with ozone water had no change in freshness at all.

On the other hand, ozone deodorizing effects include, for example,
There are the following. The effect of eliminating bad odors such as tobacco and garbage, the effect of eliminating unusual odors and medical odors in hospitals and nursing homes, the effect of eliminating odors in drainage, and the deodorization of odors in restaurants, accommodation facilities and amusement parks Effects.

[0006] The odor of railway station building toilets is a problem. The cause of this bad smell is ammonia generated when urea contained in urine is decomposed by bacteria. Also, when the temperature rises, the bacteria rapidly increase, so that it is not possible to remove the bacteria just by flowing tap water.

Therefore, when the toilet was cleaned using ozone water instead of tap water, the odor of the toilet could be reduced by the deodorizing power of ozone and the sterilizing power several times that of chlorine.

As described above, ozone and ozone water have a strong sterilizing effect and a deodorizing effect.

Next, an ozone water producing apparatus will be described.
FIG. 5 is a schematic view showing a conventional ozone water producing apparatus, and FIG. 6 is a sectional view showing an ozone generator of the conventional ozone water producing apparatus. FIG. 7 is a sectional view showing a static mixer of the ozone water producing apparatus.

As shown in FIG. 5, an ejector 6 is provided in the conventional ozone water producing apparatus 111. Tap water inlet 6a into which tap water flows into the upper part of this ejector 6.
Is formed, and an ozone inflow port 6b through which ozone flows is formed at a side portion thereof. Tap water is supplied to a tap water inlet 6a via a solenoid valve (not shown), and ozone is supplied from an ozone generator 103 provided separately via an ozone inlet via a check valve (not shown). 6b. The ejector 6 can mix the tap water supplied to the tap water inlet 6a with the ozone supplied to the ozone inlet 6b.

As shown in FIG. 6, the ozone generator 103 is provided with a cylindrical negative electrode 3c with its axial direction being horizontal, and inside this negative electrode 3c, a cylindrical positive electrode is provided with its axial direction. It is provided horizontally. An air inlet 3a is formed on one end face of the negative electrode 3c, and an ozone supply port 3e is formed on the other end face. When a voltage is supplied to the ozone generator 103 from an ozone generation power supply (not shown) provided separately, oxygen flows into the air inlet 3a through an air filter (not shown), and the inflowing oxygen is discharged. And the ozone is supplied from the ozone supply port 3e to the ozone inlet 6b of the ejector 6.
It can be supplied to.

As shown in FIG. 5, a static mixer (static fluid mixer) 7 is connected below the ejector 6. This mixer 7 is disclosed in
33, using a static fluid mixer. As shown in FIG. 7, a cylindrical member 17 is provided in the mixer 7, and two kinds of fluids (in this case, tap water and ozone) flow in the longitudinal direction of the cylindrical member 17. A blade member 15 is disposed in the cylindrical member 17. The blade member 15 includes a first blade portion 12 that rotates 180 ° in a clockwise spiral and a 180 ° spiral in a counterclockwise direction.
The rotating second blade portions 13 alternately exist in the longitudinal direction of the tubular member 17. A hole 14 is provided at the boundary between the first blade portion 12 and the second blade portion 13. The portion where the hole 14 is formed is twisted so that the end of the first blade portion 12 and the end of the second blade portion 13 are orthogonal at an angle of about 90 °. The blade member 15 is a cylindrical member 17
, And both are fixed in part. Thus, the inside of the tubular member 17 is partitioned into two fluid passages by the first blade portion 12 and the second blade portion 13 of the blade member 15.

In the mixer 7 configured as described above, the fluid flowing through one of the fluid passages is divided, and merges with the fluid flowing through the other fluid passage. By repeating, tap water and ozone are mixed. In addition, each time it passes through the boundary between the first blade portion 12 and the second blade portion 13, it flows toward the center of the cylindrical member 17 by being inserted through the hole 14 at the center, and is uniformly mixed. Therefore, the mixer 7 has a high mixing efficiency. The inner diameter of the cylindrical member 17 is φ9 mm,
The blade member 15 has a four-element shape in which two blade portions 12 and 13 are provided, each having a total length of 80 mm.

Further, as shown in FIG. 5, the mixer 7 is connected via a bellows 119 to a reaction vessel 108 in the form of a hollow container. A partition 118 that stands upright from the bottom is provided on the inner bottom surface of the reaction tank 108, and the inside of the reaction tank 108 is connected to the bellows 119 by the partition 118.
The compartment 108a is divided into a second compartment 108b. The first and second compartments 108a and 108b communicate with each other at the upper side.

Further, an air vent 9 is provided on the outer upper surface of the reaction tank 108. The air vent 9 can discharge the ozone floating above the inside of the reaction tank 108 to the outside of the reaction tank 108 while maintaining the pressure inside the reaction tank 108. Further, an exhaust ozone decomposer (not shown) is connected to the air vent 9, and ozone is decomposed into oxygen by the exhaust ozone decomposer and is discharged to the atmosphere.

A drain 20 is provided on the bottom surface of the second compartment 108b of the reaction tank 108. When the drain 20 is opened, water accumulated in the second compartment 108b can be discharged to the outside. It has become.

In the conventional ozone water producing apparatus 111 configured as described above, the solenoid valve (not shown) is opened to allow the tap water to flow into the tap water inlet 6a of the ejector 6, and the ozone generating power supply to be turned off. When it is turned on, oxygen flowing into the ozone generator 103 through an air filter (neither is shown) is discharged and ozonized, and the ozone flows into the ozone inlet 6b of the ejector 6.

Further, tap water and ozone flow into the static mixer 7, and the two are sufficiently mixed by the mixing effect of the fluid. This mixed ozone water is the bellows 1
The gas flows into the first compartment 108 a of the reaction tank 108 through the port 19. At this time, the ozone that has not been mixed with the tap water floats above the inside of the reaction tank 108 and is sent out to the waste ozone decomposer 10 through the air vent 9 provided on the upper surface of the reaction tank 108. As a result, ozone is decomposed into oxygen and discharged into the atmosphere.

Further, the ozone water accumulated in the first compartment 108a gradually increases, and eventually exceeds the upper end of the partition 118 and the second
It flows out to the compartment 108b. This ozone water is supplied to the second compartment 10
When the drain port 20 provided on the bottom surface of 8b is opened, it is discharged outside and used for the purpose of sterilization and deodorization.

By the way, when the ozone concentration in the ozone water is increased, the sterilizing effect and the deodorizing effect of the ozone water are further enhanced. Therefore, a manufacturing apparatus capable of producing ozone water having a high ozone concentration is desired. It is extremely difficult to stably increase the ozone concentration of the generated ozone water by increasing the amount of ozone generated from the generator. This is because the amount of ozone generated from the ozone generator decreases as the temperature and humidity increase. Therefore, it is necessary to eliminate elements that lower the ozone concentration as much as possible.

[0021]

However, in the conventional apparatus for producing ozone water, since ozone water passes through the bellows 119 when flowing into the reaction tank 108 from the mixer 7, it receives fluid resistance from the bellows 119. For this reason, the flow rate of the ozone water is reduced, and the ozone once mixed in the tap water is easily separated from the tap water, so that there is a disadvantage that the ozone concentration in the ozone water decreases.

In the ozone generator 103, when water droplets 3d are generated on the inner surface of the negative electrode 3c due to dew condensation and the water droplets 3d fall on the positive electrode 3b, the negative electrode 3c and the positive electrode 3b can be short-circuited. There is a disadvantage that there is.

Further, since the ejector 6 and the mixer 7 are separate from the reaction tank 108, there is a problem that the manufacturing apparatus is large.

The present invention has been made in view of the above problems, and has as its object to provide a small-sized ozone water producing apparatus while increasing the ozone concentration in the generated ozone water.

[0025]

An ozone water producing apparatus according to the present invention comprises an ozone generator for generating ozone, a stationary mixer for mixing tap water and ozone, and a mixer for mixing the ozone water with the stationary mixer. And a reaction tank containing the mixed ozone water, wherein the stationary mixer is disposed inside the reaction tank.

In the present invention, the ozone-mixed water mixed by the static mixer flows directly into the reaction tank, so that the ozone-mixed water receives a small fluid resistance and its flow rate does not decrease much. Therefore, separation of ozone from the ozone mixed water when flowing into the reaction tank from the stationary mixer can be reduced. Therefore, the ozone concentration in the ozone mixed water can be increased, and the sterilizing effect and the deodorizing effect of the ozone mixed water can be increased.

Further, since the static mixer is disposed inside the reaction tank, the size of the apparatus can be reduced and the structure of the apparatus can be reduced as compared with the case where the static mixer is separate from the reaction tank. Simplification, reduction in the number of parts, and weight reduction can be achieved. Therefore, these improvements can reduce the cost of the manufacturing apparatus.

The ozone generator has a cylindrical negative electrode disposed with its axial direction vertical, a positive electrode disposed inside the negative electrode, an oxygen inlet, an ozone supply port,
It is preferable that oxygen is ozonized by applying a voltage to both electrodes.

As a result, even if water droplets are generated on the inner surface of the negative electrode inside the ozone generator due to dew condensation, the water droplets fall down along the inner surface of the negative electrode. The occurrence of a short circuit can be prevented.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an ozone water producing apparatus according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a schematic view showing an ozone water producing apparatus according to the present invention, and FIG. 2 is a schematic view showing an entire ozone water producing apparatus according to the present invention. FIG. 3 is a sectional view showing an ozone generator of the ozone water producing apparatus according to the present invention.

As shown in FIG. 1, the ozone water producing apparatus 11 of the present embodiment is provided with a reaction vessel 8 having a hollow container shape. A partition 18 standing upright from the bottom is provided on the inner bottom surface of the reaction tank 8, and the inside of the reaction tank 8 is divided into a first compartment 8 a and a second compartment by the partition 18. The first and second compartments 8a and 8b communicate with each other at the upper side.

An ejector 6 similar to the conventional one and a static mixer 7 connected below the ejector 6 arrange the tap water inlet 6a and the ozone inlet 6b of the ejector 6 outside the reaction tank 8, and Other parts are first
It is provided so as to be arranged in the compartment 8a.

Further, as shown in FIG. 2, tap water is supplied to a tap water inlet 6a of an ejector 6 through an electromagnetic valve 5, and ozone is supplied from a separately provided ozone generator 3 to a check valve 4. The ozone is supplied to the ozone inlet 6b of the ejector 6 through the outlet. When a voltage is supplied from the ozone generator 2 to the ozone generator 3, oxygen flows in through the air filter 1.

As shown in FIG. 3, the ozone generator 3 of this embodiment is a conventional ozone generator 103 (see FIG. 6).
The air inlet 3a is disposed above and the ozone air outlet 3e is disposed below, so that the negative electrode 3c and the positive electrode 3b
Are arranged with their axial directions vertical. That is, the ozone generator 3 of the present embodiment has the conventional ozone generator 103 arranged vertically.

In the ozone water production apparatus 11 of this embodiment, a conventional ozone water production apparatus
The configuration is the same as that described above, and the description is omitted.

In the ozone water producing apparatus 11 according to the present embodiment, the solenoid valve 5 is opened so that tap water flows into the tap water inlet 6a of the ejector 6, and the ozone power supply 2 is turned on. Oxygen flowing into the ozone generator 3 through the air filter 1 is discharged to ozonize,
The ozone flows into the ozone inlet 6b of the ejector 6.

Further, the tap water and ozone flow into the static mixer 7, and the two are sufficiently mixed by the mixing effect of the fluid. The mixed ozone water flows into the first compartment 8a of the reaction tank 8. Then, the ozone water accumulated in the first compartment 8a gradually increases, and eventually flows out of the upper end of the partition wall 18 into the second compartment 8b. As described above, since the upward flow is generated in the ozone water, the ozone not mixed with the ozone water easily moves upward inside the reaction tank 8,
It is sent to an exhausted ozone decomposer 10 via an air vent 9 provided on the upper surface of the reaction tank 8, and the exhausted ozone decomposer 10 decomposes ozone into oxygen and discharges it to the atmosphere.

The ozone water which has passed over the upper end of the partition 18 is discharged to the outside when the drain port 20 provided on the bottom of the second compartment 8b is opened, and is used for the purpose of sterilization and deodorization.

As described above, in the present embodiment, the tap water and the ozone supplied to the ejector 6 are mixed in the mixer 7, and the first compartment 8a of the reaction tank 8 is mixed without passing through the bellows.
The fluid resistance that ozone water receives is small,
The flow velocity drop is small. Therefore, separation of ozone from ozone water when flowing into the reaction tank 8 from the mixer 7 can be reduced. Therefore, the ozone concentration in the ozone water can be increased, and the sterilizing effect and the deodorizing effect of the ozone water can be enhanced.

Further, since the negative electrode 3c of the ozone generator 3 is arranged with its axial direction vertical, even if water droplets 3d are generated on the inner surface of the negative electrode 3c inside the generator 3 due to dew condensation, the water droplets are generated. 3d falls down along the inner surface of the negative electrode 3c, so that the negative electrode 3c and the positive electrode 3b
Can be prevented from occurring.

Further, since the mixer 7 is built in the reaction tank 8 and the bellows is eliminated, the size of the apparatus can be reduced.
The structure of the device can be simplified, the number of parts can be reduced, and the weight can be reduced. Further, water leakage from the bellows or the like can be prevented. Therefore, these improvements can reduce the cost of the manufacturing apparatus.

[0042]

EXAMPLES The results of tests performed to demonstrate the effects of the present invention will be specifically described below. A test was performed to compare the ozone concentration of ozone water generated using the ozone water production apparatus 11 or 111. As an example, under the conditions of an air temperature of 23 ° C., a water temperature of 20 ° C. and a humidity of 80%,
The ozone concentration of ozone water generated using the ozone water production device 11 was measured. As a comparative example, similarly, the ozone concentration of the ozone water generated using the ozone water production apparatus 111 was measured, and the ozone concentrations of the two were compared.

As a result, the ozone concentration of the ozone water was 0.3 ppm in the example, and the ozone concentration of the ozone water was 0.2 ppm in the comparative example.
That is, the example has an ozone concentration of 0.1 pp compared with the comparative example.
m can be increased.

[0044]

As described in detail above, according to the present invention,
Separation of ozone from ozone mixed water when flowing into the reaction tank from the static mixer can be reduced. Therefore, the ozone concentration in the ozone mixed water can be increased, and the sterilizing effect and the deodorizing effect of the ozone mixed water can be increased.

Since the static mixer is disposed inside the reaction tank, the size of the apparatus can be reduced and the structure of the apparatus can be reduced as compared with the case where the static mixer is separate from the reaction tank. Simplification, reduction in the number of parts, and weight reduction can be achieved. Therefore, these improvements can reduce the cost of the manufacturing apparatus.

The ozone generator has a cylindrical negative electrode disposed with its axial direction vertical, a positive electrode disposed inside the negative electrode, an oxygen inlet, an ozone supply port,
When oxygen is ozonized by applying voltage to both electrodes, even if water droplets are generated on the negative electrode inside the ozone generator due to condensation, the water droplets travel down the inner surface of the negative electrode and Therefore, it is possible to prevent a short circuit between the negative electrode and the positive electrode due to the drop of the water droplet.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an ozone water producing apparatus according to the present invention.

FIG. 2 is a schematic view showing an entire ozone water producing apparatus according to the present invention.

FIG. 3 is a sectional view showing an ozone generator of the ozone water producing apparatus according to the present invention.

FIG. 4 is a schematic diagram showing a test method for evaluating the sterilizing effect of ozone water.

FIG. 5 is a schematic diagram showing a conventional ozone water producing apparatus.

FIG. 6 is a sectional view showing an ozone generator of a conventional ozone water producing apparatus.

FIG. 7 is a sectional view showing a static mixer of the ozone water producing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Air filter 2; Ozone generating power supply 3, 103; Ozone generator 3a; Air inlet 3b; Positive electrode 3c; Negative electrode 3d; Tap water inlet 6b; ozone inlet 7; static mixer 8; reaction tanks 8a and 8b; compartment 9; air vent 10; waste ozone decomposers 11, 111; ozone water producing devices 12, 13; Blade member 17; Cylindrical member 18; Partition wall 19; Bellows 20; Drain port 21; Flow meter 22; Immersion tank 23;

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Claims (2)

[Claims] An ozone generator comprising: an ozone generator for generating ozone; a stationary mixer for mixing tap water and ozone; and a reaction tank for containing ozone mixed water mixed by the stationary mixer. An ozone water production apparatus, wherein the static mixer is disposed inside the reaction tank. 2. The ozone generator has a cylindrical negative electrode disposed with its axial direction vertical, a positive electrode disposed inside the negative electrode, an oxygen inflow port, an ozone supply port, The ozone water production apparatus according to claim 1, wherein oxygen is ozonized by applying a voltage to both electrodes.