JPH064158B2 - Ozone water purifier - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ozone water purifier that purifies water by mixing ozone with tap water or the like and dissolving the mixture.

[Prior Art] Conventionally, various water purifiers for purifying tap water and the like once again immediately before use have been proposed. As such a water purifier, there is a water purifier that uses activated carbon or hollow fibers as a filter medium to remove organic substances, bacteria and other microorganisms.

That is, a water purifier using activated carbon circulates tap water or the like in a container filled with granular activated carbon, and when tap water comes into contact with the activated carbon, impurities are removed by the adsorption force of the activated carbon and the filtering action.

On the other hand, a water purifier using a hollow fiber filters water with a polymer membrane having very fine holes at the molecular level to separate and remove impurities.

[Problems to be Solved by the Invention] In the conventional water purifier as described above, basically, there is no sterilization ability, and bacteria are propagated in the water or the activated carbon that is the filter medium accumulated inside the water purifier, The number of bacteria rather increases, depending on the type of bacteria hydrogen sulfide etc. are generated,
There was a problem that odor may be generated.

There are also proposals for sterilizing and sterilizing by irradiating ultraviolet rays, and those for purifying water by electrolysis, but the irradiation amount of ultraviolet rays may decrease due to stains on the container,
There were problems such as not being able to obtain sufficient sterilization ability, and it was not satisfactory.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an ozone water purifier that can effectively purify using ozone.

[Means for Solving the Problem] A high-frequency high-voltage power is applied between electrodes formed on a ceramic substrate to generate an ozone by generating a creeping discharge, and an ozone generating section that generates ozone. A flow passage that allows the ozonized air to flow, a check valve that is disposed in this flow passage that allows the ozonized air to flow in only one direction, and the ozonized air that has passed through this check valve is sucked by a high-speed water flow. , An ejector section for mixing these to obtain ozone water, and provided on the downstream side of the ejector section,
The ejector section has a mixer section that collides ozone water with a resistor to promote mixing, and a mixing chamber that retains ozone water that has passed through the mixer section and further promotes mixing. And a straight tubular pipe portion that surrounds the nozzle portion and introduces ozone water into the mixer portion, and the ejector side outlet of the ozonized air in the flow passage is the pipe portion downstream from the tip of the nozzle portion. And a water inlet connectable to a faucet of the water supply is provided on the upstream side of the nozzle portion.

[Operation] In the present invention, high frequency voltage power is applied between the electrodes formed on the ceramic substrate to cause creeping discharge on the ceramic substrate to generate ozone. Then, the generated ozone is sucked by the ejector unit and mixed there with water. Here, a check valve is provided in this path. Therefore, when the water supply is stopped, it is possible to reliably prevent backflow of water, for example, when the water discharge port is blocked.

Further, the ozone water obtained in the ejector section flows into the mixing chamber via the mixer section. The mixer section is one in which a resistor is arranged in the flow path, and ozone water collides with the resistor here, thereby promoting gas-liquid mixing (particularly atomization and dissolution of bubbles). Further, the ozone water flows into the mixing chamber and stays there for a predetermined time, whereby the dissolution of ozone is further promoted, and the dissolved ozone is sterilized and the impurities are removed by oxidation.

As described above, according to the present invention, it is possible to efficiently generate ozone and mix the ozone and the water to be treated, so that the apparatus can be made compact. Therefore, the device can be attached to the faucet and used as a household water purifier. In particular, since the check valve is provided, it is possible to prevent water from flowing backward toward the ozone generating portion, and the device can be used safely.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram showing an overall configuration of an ozone water purifier according to the present invention. An ozone water purifier 500 receives air and water and purifies water by ozone.

In the figure, the upper housing 10 has a cylindrical shape whose lower part is opened, and has a plurality of air circulation ports 12 on the side of the lower end. The air circulation port 12 is provided below a flow passage 14 that is formed by laterally bulging the upper housing 10 in a rib shape. In addition, it is preferable to form about four flow passages 14 at a predetermined interval.

A power board 16 is provided in an upper portion inside the upper housing 10.
A power supply circuit 18 fixed to is provided. The power supply circuit 18 generates a predetermined high-voltage high-frequency current necessary for generating ozone in the ozone generator 40.

One end of the power supply board 16 is fixed to a plate-shaped heat dissipation plate 20 arranged vertically. Also, this heat sink 20
The other end of is connected to a plate-shaped heat radiation fin 22. Therefore, the heat generated in the power supply circuit 18 is transmitted to the heat dissipation plate 20 and the heat dissipation fins 22 via the power supply board 16,
Heat is dissipated here.

Below the radiating fins 22, a drying filter 30 made of honeycomb silica gel is arranged. Therefore, the air that has flowed in through the air circulation port 12 bypasses the heat radiation fins 22 and flows through the inside of the drying filter 30 where it is dried.

Then, the dried air is then supplied to the ozone generator 40.
Be distributed to. The ozone generator 40 is composed of an ozone generator main body 42 and an ozone plate 44. And
Usually, about three ozone plates 44 are installed on the upper surface of the ozone generator main body 42, and creeping discharge is generated on the lower surface of the ozone plate 44 to generate ozone. Here, in this embodiment, the air supplied to the ozone generator 40 is dried. Therefore, nitrogen oxide is not generated during discharge, and the efficiency of ozone generation can be improved.

An inlet 46 is formed on the side of the ozone plate 44 (left side in the figure) of the ozone generator main body 42, and an outlet 48 is provided on the lower side (right side in the figure) of the ozone plate 44. Has been. Therefore, the dry air flowing in from the inflow port 46 flows below the ozone plate 44,
The outflow port 48 flows out as ozonized gas containing ozone generated on the lower surface of the ozone plate 44.

A pair of support protrusions 50 and 52 are provided on the upper portion of the ozone generator body 42 to support the radiating fins 22. In addition, a wide groove 54 is formed at the bottom of the ozone generator main body 42, and the lower piece 56a of the heat radiation fin 56 is inserted and arranged therein. The other end of the heat radiation fin 56 is connected to the ozone generator body 4
The upper piece 56b extends from the side of the drying filter 30 to the upper side of the drying filter 30 by bypassing the line 2, and supports the drying filter 30.

On the other hand, below the upper housing 10, a cylindrical lower housing 60 is similarly connected and fixed. Then, the ozone generating unit 4 described above is provided on the side portion of the lower housing 60.
Ozonized gas flow passage 6 communicating with the outflow portion 48 at 0
Two are provided. The ozonized gas flow passage 6
A check valve 64 is provided at the upper end of 2 to prevent the back flow of ozonized gas or the like to the ozone generating section 40 side.

The lower end of the ozonized gas flow passage 62 is open to the ejector unit 70, and the ozonized gas is sucked by the ejector unit 70, whereby the air is sucked and circulated through the air circulation port 12 and the ozone generation unit 40. .

A nozzle portion 82 of a side housing 80 is arranged in the ejector portion 70, and by ejecting water from the nozzle portion 82, the ozonized gas in the ozonized gas flow passage 62 is suctioned under reduced pressure. A water inlet 84 provided in the side housing 80 is connected to the nozzle portion 82, and tap water is connected to the water inlet 84 to supply pressure water to the nozzle portion 82. You can

A mixing chamber 94 is connected to the downstream side of the ejector section 70 via a mixer section 90. Therefore, the ozone water mixed with the ozonized gas in the ejector unit 70 and containing ozone flows into the waxing chamber 94. The mixing chamber 94 occupies most of the lower housing 60,
It has a certain volume. Therefore, the ozone water stays here to some extent. In particular, the ozone water inlet 96 to the mixing chamber 94 is arranged at the bottom of the mixing chamber 94 so that the ozone water flows upward. Therefore, the ozone water convects into the mixing chamber 94. Further, since the inside of the mixing chamber 94 is usually under pressure,
Here, the dissolution of ozone in the ozonized gas remaining as bubbles in the ozone water is promoted.

An outflow port 98 is arranged at the side bottom of the mixing chamber 94. Further, a silver ceramics filter 110 is arranged on the side of the mixing chamber 94 of the outlet 98.
Therefore, the ozone water whose dissolution of ozone is promoted in the mixing chamber 94 passes through this silver ceramics filter 110.

The silver ceramics filter 110 is a porous ceramics substrate containing silver. When ozone water is circulated through the substrate, silver is oxidized into silver peroxide by the oxidizing action of ozone. The dissolution of silver is accelerated. Therefore, a predetermined amount of silver ions are dissolved in the ozone water that has passed through the silver ceramics filter 110.

Since silver ions have sterilizing power when they are dissolved and are stable in water, unlike silver, they have lasting sterilizing power. Therefore, even if ozone water stays inside the ozone water purifier for a long period of time, bacteria and the like do not propagate there.

Then, the ozonized water in which silver ions are dissolved is discharged through the discharge path 1
It is supplied to the ozone removal filter 130 via 20.
This ozone removal filter 130 is composed of three metal filters 1
32 is built in, and this is fixed to the outflow port 136 by a cap 134. Therefore, after the ozonized water from the discharge path 120 comes into contact with the three metal filters 132,
It is discharged from the discharge port 138 as treated water. For this reason,
The ozone water is decomposed on the surface of the metal filter 132 and is discharged as treated water from which ozone is removed. Therefore, this treated water does not contain ozone harmful to the human body and can be used as drinking water as it is.

On the other hand, since the cap 134 of the ozone removing filter 130 is screwed to the side housing 80, the metal filter 132 can be easily removed by turning it. When the metal filter 132 is removed, ozone is not removed from the ozone water, and the ozone water containing ozone is discharged through the outlet 138.
Will be discharged from. Therefore, in this case, various sterilization can be performed using ozone water.

Further, the switch 150 shown on the right side of the side housing 80 in the drawing turns on / off the power supply in the ozone generating section 40, and ozone is generated only when the switch 150 is turned on. When the switch 150 is turned on and ozone is being generated, a buzzer (not shown) may be used to emit a buzzer sound to warn that ozone is being generated.

It should be noted that the time during which the switch 150 is turned on is integrated by an integrator (not shown), and this may be displayed when a predetermined time has elapsed. Normally, the ozone generator 40 and the like have a predetermined life, and it is not preferable to use them as they are for a long time. By providing an integrating meter and displaying a predetermined replacement time in this way, necessary measures can be taken at an appropriate time.

FIG. 2 is a view for explaining the configuration of the ozone removal filter 130, and the cap 134 is screwed to the outflow port 136 of the side housing 80. For this reason, an internal thread is formed on the cap 134, and the outlet 13
A male screw 136 a is formed on the No. 6. In addition, the metal filter 132 has a thick plastic ring 1 around it.
32a is provided, and a circular metal mesh 132b is fixedly supported around the periphery by the plastic ring 132a. Since the plastic ring 132a is desired to be thick, the three metal meshes 132b are joined together by the stainless steel meshes 132b when the metal filters 132 are stacked and fastened.
They are arranged at a distance corresponding to the wall thickness of 32a, and the contact between the ozone water flowing there and the metal mesh 132b is promoted.

Here, as the material of the ozone removal filter 130, any material that promotes ozone decomposition can be used. For example, conventionally well-known platinum or the like can be used, and stainless steel can also be used although the catalytic action is small.

Further, in this embodiment, the ozone removing filter 130 is removed by removing the cap 134, but the present invention is not limited to this, and a stainless steel filter may be a cassette type. Alternatively, two cassettes having the same shape may be provided, one of which is a stainless filter and the other of which is a nylon filter, and these may be switched by a single touch by sliding movement.

Further, as described above, the silver ceramics filter 110 is made of porous ceramics containing silver, and such a silver ceramics filter 110 is such that porous ceramics are coated with silver powder or fired after coating. It can be formed by including silver in the raw material and firing. Further, the shape of the porous ceramics may be a honeycomb shape or the like.

The elution of silver ions depends on the amount of silver peroxide produced by ozone. Therefore, the amount of silver ions dissolved is set according to the concentration of ozone in ozone water so that the content of silver in water is 50 ppb or less (reference value of drinking water).

Next, FIG. 3 is a configuration diagram of the ozone plate 44. A linear discharge electrode 202 is arranged on the ceramic substrate 200, and the discharge electrode 202 is covered with an alumina layer 204. In addition, a plate-shaped induction electrode 206 is arranged to face the discharge electrode 202. Therefore, when high-frequency high-voltage power from the high-frequency power source 208 is applied between the discharge electrode 202 and the dielectric electrode 206, a creeping discharge occurs here. And
When such creeping discharge occurs, ozone is generated on the surface of the discharge electrode side.

Then, such an ozone plate 44 is fitted and fixed to the ozone generator main body 42 as shown in FIG. That is, the step portion 42 for fitting is attached to the ozone generating portion main body 42.
Three a are aligned and formed in parallel, and the ozone plate 44 is inserted and arranged therein. In addition, an inlet port 46 is provided at one end side (left side in the figure) of the fitting stepped portion 42a of the ozone generator body 42. Therefore, the ozone plate 4 of the ozone generator 40
The space for air circulation in the lower part of 4 corresponds to each ozone plate 4
Partitions may be formed every four.

As described above, the heat radiation fins 56 are arranged in the ozone generation part main body 42 so as to come into contact with the ozone generation part body 42. The shape of the heat radiation fins 56 may be configured as shown in FIG. 5, for example. Further, if the heat radiation fins 56 are made of aluminum, heat can be quickly transferred, and the drying filter 30 can be used.
Can be heated and its drying can be accelerated.

The drying filter 30 is preferably configured in a cylindrical shape, for example, as shown in FIG. 6, and concave portions 30a and 30b that engage with the supporting convex portions 50 and 52 in the ozone generating portion 40 are provided at corresponding positions. It is good to put it. With such a configuration, the drying filter 30 can be placed and fixed at the time of assembly, and the production and the like are simplified. Also, the drying filter 3
No. 0 has a structure in which the peripheral portion 30c holds the honeycomb (honeycomb) -shaped silica gel.

The material of the drying filter 30 may be zeolite or the like, and a granular drying material such as the heat resistant sheet 3 may be used.
It may be wrapped with 0d and held in the peripheral portion 30c.

Further, as the shape of the mixer section 90, for example, one in which a large number of plate-shaped fins 90a radially extended as shown in FIG. 7 are arranged along the flow direction is preferable.

[Advantages of the Invention] As described above, according to the ozone water purifier of the present invention, it is possible to perform highly effective water purification by ozone oxidation. In particular, since the check valve is provided between the ozone generating section and the ejector section, it is possible to prevent water from flowing back to the ozone generating section.

[Brief description of drawings]

FIG. 1 is a sectional view showing the overall construction of an embodiment of an ozone water purifier according to the present invention, FIG. 2 is an explanatory view showing the construction of an ozone removal filter 130, and FIG. 3 is a view showing the construction of an ozone plate 44. Partial cross-sectional view, FIG. 4 is a perspective view showing the configuration of the ozone generating section 40, FIG. 5 is a perspective view showing the configuration of the radiation fins 56, FIG. 6 is a perspective view showing the configuration of the drying filter 30, and FIG. FIG. 3 is a schematic diagram showing a configuration of a mixer section 90. 30 ... Drying filter 40 ... Ozone generating part 56 ... Radiating fin (heat transfer member) 70 ... Ejector part (ozone water generating part) 110 ... Silver ceramics filter 130 ... Ozone removing filter 500 ... Ozone water purifier

Claims (1)

[Claims] 1. An ozone generating section that applies high-frequency high-voltage power between electrodes formed on a ceramic substrate to generate a creeping discharge to generate ozone, and ozonized air containing ozone generated in this ozone generating section. And a check valve that is disposed in the flow passage and that allows the ozonized air to flow in only one direction, and the ozonized air that has passed through the check valve is sucked by the high-speed water flow to mix them. Then, an ejector section for obtaining ozone water, a mixer section provided downstream of this ejector section for colliding ozone water with a resistor to promote mixing, and ozone water that has passed through the mixer section is retained and mixed. The ejector section has a nozzle section for ejecting a high-speed water stream, and a straight pipe for surrounding the nozzle section and introducing ozone water into the mixer section. And an ejector side outlet of the ozonized air in the flow passage is formed in an upper portion of the pipe portion downstream of the tip of the nozzle portion, and a tap for water is provided upstream of the nozzle portion. An ozone water purifier characterized by having a water inlet that can be connected to.