JPH03114590A - Apparatus for making ozone water - Google Patents

Abstract

PURPOSE:To prevent the scaling-up of the title apparatus as a whole and an increase in cost by forming a water channel fitted with an injector and an ozone generating space in an integrated metal block and mounting a flat plate shaped electric field apparatus constituted by providing by a linear corona discharge electrode and a planar induction electrode through a dielectric layer in the ozone generating space. CONSTITUTION:A water channel 2 fitted with an injector 1 and an ozone generating space 3 are formed in an integrally formed metal block 4 and a flat plate-shaped electric field apparatus 8 constituted by providing a linear corona discharge electrode 6 and a planar induction electrode 7 through a dielectric layer 5 is mounted in the ozone generating space 3 and the surface on the side of the planar induction electrode 7 of the flat plate-shaped electric field apparatus 8 is brought into contact with the wall surface 3a of the ozone generating space 3 and the surface on the side of the linear corona discharge electrode 7 thereof is arranged in opposed relation to the interior of the ozone generating space 3. The suction port 14 of the throat part 12 of the injector 1 communicates with an ozone gas outlet 16. By this method, ozone generating efficiency is enhanced and the scaling-up of the apparatus and an increase in cost can be prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to general medicine, food, waste water, sewage, etc. sterilization,
The present invention relates to an apparatus for producing ozone-containing water (hereinafter referred to as ozone water) used for purification, decolorization, and deodorization.

BACKGROUND OF THE INVENTION An ozonizer used in this type of device has a corona discharge electrode on the inner peripheral surface of a cylindrical dielectric, an insulating end plate at both ends of the cylindrical dielectric, and one end plate of the cylindrical dielectric. A source gas supply port is formed on one side, and an ozone 1 gas discharge port is formed on the other side.
In addition, circular induction electrodes are buried concentrically within the thickness of the cylindrical dielectric, a water jacket is provided with a space on the outer circumferential surface of the cylindrical dielectric, and a high-frequency A high-voltage power source is connected and a high voltage is applied to generate a creeping discharge on the inner peripheral surface of the cylindrical dielectric, and the source gas consisting of oxygen gas or air supplied from the source gas supply port is Heat the ozone gas and discharge it from the ozone gas outlet.
This ozone gas is sent to the negative pressure section of a venturi tube, which is provided separately, and mixed with the water flowing therein to produce ozone water.

Therefore, this ozone water production device includes a cylindrical electric field device in which a linear corona discharge electrode is provided on the inner surface of a single cylindrical dielectric, and an induction electrode is embedded within the thickness of the cylindrical dielectric.
Since a venturi tube must be provided completely separately from this, the overall device becomes large-sized, and it is difficult to avoid high costs due to the difficulty in manufacturing the cylindrical electric field device.

[Problem to be Solved] This invention attempts to solve the above-mentioned problems in the conventional ozonated water production apparatus, and in particular forms a linear corona discharge electrode on the inner surface of a cylindrical dielectric. However, the purpose is to reduce the high cost due to the difficulty of the process of embedding the planar induction electrode within the thickness of the dielectric.

The purpose of the pond of this invention is to prevent the increase in size of the entire device due to separate provision of both the ozonizer made of a cylindrical electric field device and the Venturi tube as in the prior art, and the resulting increase in cost. It is.

Another goal is to effectively cool the heat generating part of the ozonizer to improve ozone generation efficiency.

[Means for Solving the Problems] The ozone water production device of the present invention has an injector or Venturi tube 1-inch waterway and an ozone generation space formed inside a -t* metal block, and a dielectric material in the ozone generation space. A planar electric field device having a linear corona discharge electrode and a planar induction electrode provided through a layer is built in, and the surface of the planar electric field device on the planar induction electrode side is connected to the ozone via a dielectric layer. The linear corona discharge electrode is placed in surface contact with the wall surface of the generation space, and the surface on the side of the linear corona discharge electrode faces into the ozone generation space, and a high frequency and high voltage power source is provided between the linear corona discharge electrode and the planar induction electrode. A source gas inlet is provided at one end of the ozone generation space, and the suction port of the throat of the Venturi tube is communicated with the other end of the ozone generation space via a check valve.

[For 1Y] A high-frequency, high-voltage power source is connected between the linear corona discharge electrode of the flat electric field device and the planar induction electrode provided on the inner wall surface of the ozone generation space formed inside the metal block. A high frequency and high voltage is applied to generate a creeping discharge on the front cover on the linear corona discharge electrode side of the flat electric field device, and a creeping discharge is generated from the source gas pipe provided at the end of the creeping discharge generation space. The raw material gas supplied to the injector is heated with ozone gas, which is then passed through the ozone gas pipe and check valve to be supplied to the suction port of the low pressure section of the injector.

At the same time, water is supplied from the inlet of the water pipe containing the injector to its outlet, and during that time, due to the pressure drop of the water as it passes through the injector, the suction section provided at that part is The ozone gas is sucked into the flowing water in the low pressure part of the injector, dispersed into a large number of bubbles, absorbed into the water, and turned into ozone water, which is then discharged from the ozone water outlet.

At this time, the heat generated during the creeping discharge is directly cooled by the water flowing through the venturi tubular induction electrode, and the creeping discharge generating portion is directly cooled by the heat transmitted through the metal block.

[Embodiment] An embodiment of the ozone water production apparatus of the present invention will be explained with reference to the attached 1-dimensional drawing. An 11-inch injector waterway 2 and an ozone generation space 3 are formed inside a metal block 4 that is integrally formed. A planar electric field device 8 comprising a linear corona discharge electrode 6 and a planar induction electrode 7 provided through a dielectric N5 is built in the ozone generation space 3, and a planar induction ring (support) of the planar electric field device 8 is built in. )
The surface on the 7 side is brought into surface contact with the wall surface 3a of the ozone generation space 3 via the dielectric layer 5, and the surface on the linear corona discharge electrode 6 side is placed facing into the ozone generation space 3, and furthermore, the A high-frequency, high-voltage power source 10 is connected between the linear corona discharge electrode 6 and the planar induction electrode 7, and a source gas inlet 11 is provided at one end of the ozone generation space 3, and an ozone gas outlet at the other end of the ozone generation space 3. 16 is the throat part 1 of the injector l.
The two suction ports 14 are communicated via a check valve 15.

When producing ozonated water using the apparatus of this embodiment, a high frequency high voltage is applied between the linear corona discharge electrode 6 and the planar induction electrode 7 with a high frequency high voltage power source 10. A creeping discharge 17 is generated on the corona discharge electrode 6 side of the surface of the electric field device 8, and a raw material gas 20 is supplied to the ozone generation space from a raw material gas supply pipe 18 provided at the raw material gas port 11 at the end thereof. Ozone gas is added to the ozone gas and supplied to the suction port 14 in the throat of the injector 1 through the ozone gas pipe 21 and check valve 15 provided at the ozone gas outlet 16.

At the same time, water 2 is pumped from the inlet 2a of the waterway 2 with the injector 1 toward the throat 12 of the injector 1.
2 is supplied, and due to the effect of the pressure drop of water 22 when passing through the throat part 12, the suction port 1 provided in that part
4, the ozone gas 23 is sucked into the flowing water 22 in the water channel 2 with an injector, dispersed in a large number of bubbles, and dispersed into the water 2.
2 and turn it into ozonated water 24, which is discharged from the ozonated water outlet 2b of the water channel 2 and used for the various purposes mentioned above.

In addition, at this time, the heat generated during the creeping discharge is caused by the injector directing the generation part of the creeping discharge 12 by the low heat of the flowing water 22 flowing in the water channel 1 through the integrally formed metal block. Since it is cooled by conductive heat, the temperature of that part does not rise, and ozone gas can be heated extremely efficiently.

Further, an electric heater 9 is provided inside the dielectric layer 5 between the surface of the flat electric field device 8 on the side of the planar induction electrode 7 and the planar induction electrode 7.
A heater power source (not shown) is connected to the electric heater 9, and a switch (not shown) is used to turn off the electric heater 9 and the heater power source during the aforementioned ozone generation operation, and turn on the ozone generation operation 1 when the ozone generation operation 1 is stopped. Before starting the device, turn on this switch and heat the dielectric layer 5 from inside using the electric heater to dry and remove moisture on the surface of the dielectric layer 5. To make the start-up easy and reliable.

Once started in this manner, the dielectric layer 5 is heated by the creeping discharge described above, so the electric heater power is turned off so as not to disturb the cooling of the dielectric layer during the creeping discharge. It is something to do.

Although the embodiments of the present invention have been described above with reference to FIGS. 1 and 5, the present invention is not limited thereto, and the configuration may be slightly added or changed without changing the spirit of the present invention. It is possible to implement it. 1IAl, the planar induction electrode 7 of the flat electric field device 8 of the above-mentioned embodiment is dielectric I*
Instead of embedding it within the thickness of the layer 5, the planar induction electrode 7 may not be provided in particular, but it may be attached by one inch to the inner wall surface 4a of the metal block 4 as shown in FIG. 6 to serve also as this. You can also do it. Or, although not shown, the aforementioned ozone gas pipe 21
Instead of providing the check valve 15 on the outside of the metal block 4, it may be provided in the ozone generation space 3 inside the metal block 4, or the ozone gas pipe 21 may not be provided at all, and the check valve 15 may be directly connected to the throat portion 12.
It is also possible to communicate the suction port 14 of the metal block 4 with the inside of the metal block 4 through a hole. In these cases as well, due to the low pressure of the water flow flowing through the throat 12, the ozone gas 23 in the ozone generating space 3 is sucked into the water flow, becomes a large number of bubbles, and is mixed in, turning the water into ozonated water. .

Further, the embodiment shown in FIGS. 7 to 12 is a venturi tube 25.
The 1-inch waterway 2 and the ozone generation space are formed inside a metal tube 25 in the form of an integral metal block via a partition plate 26 provided integrally therewith, and the partition plate 26 in the ozone generation space 3 is formed. A linear corona discharge electrode 6 is provided on the upper surface with a dielectric layer 5 interposed therebetween, and the surface on the linear corona discharge electrode 6 side is disposed toward the inside of the ozone generation space 3.
A flat electric field device 8 is formed by the dielectric layer 5 and the partition plate 26, and the linear corona discharge w! A high frequency high voltage is applied between 6 and the cut plate 26, and a raw material gas inlet 11 is provided at one end of the ozone generation space 3, and an outlet I6 of the ozone gas for recitation in the ozone generation space 3 is connected to the venturi tube 25. It communicates with the suction port 28 of the throat part 27 via the check valve 15, and mixes ozone gas into the water flowing through the waterway 2 to turn it into ozone water.

Further, in the embodiments shown in FIGS. 13 to 17, the planes of the partition plate 16 and the flat electric field device 8 in surface contact with the partition plate 16 are superimposed on each other so as to be oriented in the horizontal direction. The structure of the pond is the same as in the previous embodiment. In addition, in the drawings of FIGS. 7 to 17, the same parts as those in FIGS. 1 to 6 have the same names and functions.

[Effects] This invention is as described above, and since the ozone gas generation space and the waterway with an injector or the waterway with a venturi tube are formed of an integral metal block, the heat generated during the creeping discharge is transferred to the injector. The water flowing through the attached channel can directly cool the ozone generation space that houses the flat electric field device due to the heat transfer action transmitted through the metal block, where the ozone gas once generated is decomposed by high heat. Therefore, the ozone generation efficiency of the apparatus as a whole can be improved.

Further, it is possible to prevent the apparatus from increasing in size due to separate provision of an ozonizer and a venturi tube as in the conventional ozonized water production apparatus, and the associated cost increase.

Furthermore, a flat electric field device consisting of a linear corona discharge electrode provided through a plate dielectric layer and a planar induction electrode is brought into surface contact with the inner wall surface of the ozone generation space formed inside the metal block. This makes the manufacturing cost extremely low compared to the conventional cylindrical electric field device, and the planar induction electrode side of the flat electric field device is connected to the inner wall surface of the ozone gas generation space. By making surface contact with the metal block, the heat generated during the creeping discharge is transferred to the injector (") by the flowing water flowing in the water channel, and the heat of the metal block is directly transferred to the flat electric field device. Can be cooled.

[Brief explanation of drawings]

Figure 1 is an IM of an ozone water production apparatus showing an embodiment of the present invention.
Figure 2 is a sectional view taken along the line ■-■ in Figure 1.
The figure is a front view of a part of Figure 1, and Figure 4 is a partial front view of Figure 3.
5 is a right side view of FIG. 4, FIG. 6 is a vertical sectional view of a portion corresponding to a portion of FIG. 2 in another embodiment of the present invention, and FIG. longitudinal section of an embodiment of a pond;
Figure 8 is the left side view of Figure 7, Figure 9 is the X of Figure 7 in Figure 7.
13 is a longitudinal cross-sectional view of the embodiment of the pond, Figure 14 is a left side view of Figure 13, and Figure 15 is a cross-sectional view of the line xv-xv in Figure 13. Figure 16 is the first
A cross-sectional view taken along the line XVI-XVI in Figure 3, and Figure 17 is a cross-sectional view taken along the line XVI-XVI in Figure 3.
FIG. 3 is a right side view of the figure. l... Injector 2... Channel 3... Ozone generation space 4... Metal block 5... Dielectric layer 6... Linear corona discharge electrode 7... Planar induction electrode 8... - Flat electric field device 10... High frequency high voltage power supply 11... Raw material gas inlet 12... Throat 14... Suction port 15... Check valve 17... Creeping discharge

Claims (1)

[Claims] 1. A water channel with an injector and an ozone generation space are formed inside an integrated metal block, and a linear corona discharge electrode and a planar induction electrode are installed in the ozone generation space via a dielectric layer. A planar electric field device is built in, and the surface of the planar electric field device on the planar induction electrode side is in surface contact with the inner wall of the ozone generation space via a dielectric layer, and the linear corona discharge electrode side is brought into surface contact with the inner wall of the ozone generation space. is arranged with its surface facing into the ozone generation space, a high frequency high voltage power source is connected between the linear corona discharge electrode and the planar induction electrode, and a raw material gas inlet is provided at one end of the ozone generation space. , an ozonated water production device 2 characterized in that the suction port of the throat of the Venturi tube is communicated with the other end via a check valve, the surface of the planar induction electrode side of the flat electric field device and the planar induction The ozone water production apparatus 3 according to claim 1, characterized in that an electric heater is buried inside the dielectric layer between the electrodes, and a heater power source is connected to the electric heater. The ozonated water production device 4 according to claim 2, characterized in that the ozone water production device 4 is electrically connected via a switch that is turned off during operation and turned on when the ozone generation operation is stopped, wherein the waterway with the injector is a waterway with a venturi pipe. The ozone water production device 5 according to claim 1, characterized in that the ozone generation space is formed to have a rectangular cross section, and flat plate electric field devices are provided opposingly on inner wall surfaces that oppose each other. In the ozone water production device 6 described in 2, the water channel with an injector and the ozone generation space are formed inside an integral metal block via a partition plate, and linear corona radiation is provided on the wall surface of the ozone generation space via a dielectric layer. An electrode is provided, the linear corona discharge electrode, the dielectric layer, and the planar induction electrode form a flat electric field device, and the surface on the linear corona discharge electrode side is placed facing into the ozone generation space, and The ozone water production device 7 according to any one of claims 1 to 3, characterized in that a high frequency high voltage power source is connected between the linear corona discharge electrode and the planar induction electrode, the venturi pipe-equipped waterway and the ozone A flat electric field device is provided in which an ozone generation space is formed inside an integrated metal block via a partition plate, and a linear corona discharge electrode and a planar discharge electrode are provided within the ozone generation space via a dielectric layer. built-in, the surface of the planar electrode side of the flat electric field device is brought into surface contact with the partition plate,
Further, the linear corona discharge electrode is arranged with its surface facing into the ozone generation space, and a high frequency and high voltage power source is connected between the linear corona discharge electrode and the planar induction electrode, and one end of the ozone generation space is An ozonated water production device 8 characterized in that a raw material gas inlet is provided at one end of the venturi tube, and the suction port of the throat of the Venturi tube is communicated with the other end via a check valve, and a planar induction electrode of a flat electric field device is provided. The ozone water production apparatus according to claim 5, characterized in that the ozone water production apparatus is formed on a wall surface of the ozone generation space.