JPH05270805A - Pipe type ozone generator - Google Patents

Abstract

PURPOSE:To freely adjust the concn. of ozone and the amt. of the ozone to be formed by adjusting the length of an electrode wire from the outside and freely forming the discharge space of a suitable discharge length. CONSTITUTION:The total amt. of gaseous raw material in the ozone generator of a silent discharge type is passed into the discharge space formed between paired electrodes 2 and 5 and a high voltage is impressed between the paired electrodes 2 and 5 to form the ozone. The paired electrodes 2 and 5 are formed of the electrode wire 2 inserted into the small-diameter hole of a capillary tube 3 which is a dielectric substance and an electrode pipe 5 which is coaxially disposed on the outer periphery of the capillary tube 3 by providing an annular spacing to constitute a gas flow passage 4. Piping parts 6a, 7a for connecting the pipe ends on a gas introducing side and discharge side, inside pipe holding parts 6b, 7b for fixing and holding the gas flow passage 4 and the piping parts 6a, 7a in a communicating state and piping joint parts 6, 7 consisting of outside pipe holding parts 6c, 7c are formed at both ends of the tube 3 and the pipe 5. The wire length of the electrode wire 2 in the tube 3 is made freely adjustable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silent discharge type ozone generator for generating ozone by passing a source gas into a discharge space formed in a gap between electrode pairs and applying a high voltage to the electrode pairs. Specifically, it is provided with a pair of pipe joints for disposing it in an appropriate pipe line mainly composed of a gas introduction side pipe line and a gas discharge side pipe line, and the total amount of raw material gas flowed in is provided. The present invention relates to a pipe-type ozone generator that continuously generates ozone by passing it through a discharge space.

[0002]

2. Description of the Related Art Conventionally, there are ozone generators based on, for example, a silent discharge method, an electrolysis method, a photochemical method, a high-frequency electrolysis method, a radiation irradiation method, and the like. The vessel is widely used industrially. The silent discharge type ozone generator is one that generates ozone by the discharge between the electrodes facing each other through a dielectric.
The electrodes can be classified into a flat plate type, a creeping type, a coaxial cylindrical type, and the like. Among them, a flat plate type suitable for use as a small ozone generator, or a ceramic used as an ultra-small ozone generator In order to use the creeping type ozone generator 101 using a dielectric such as a chip, an appropriate pipe line is formed from the introduction portion of the raw material gas to the discharge portion of the ozone gas in order to pass the raw material gas into the discharge space. However, it is necessary to dispose the ozone generator in the pipe line by using a separate casing or the like, and the discharge space in this case is very small with respect to the flow of the raw material gas as shown in FIG. It could be formed only in the area, and the ozone generation efficiency was extremely poor.

On the other hand, the coaxial cylindrical ozone generator 102 is
As shown in FIG. 6, although it has a structure that can be directly installed in the pipeline, it is mainly used as a large-sized ozone generator and its structure is complicated. Especially, it is electrically insulated from the internal high-voltage electrode. The structure was complicated by the fact that electric energy had to be supplied while maintaining the sealing property and the sealing property. In the coaxial cylindrical ozone generator 102, for example, a metal coating 103 is formed on the inner peripheral surface of a glass tube 104, which is a dielectric, by lining, or a glass coating is formed on the outer peripheral surface of the metal tube (Fig. Since it is used as an internal electrode body by not showing it), it not only takes time to manufacture but also the gap length between the electrodes becomes non-uniform, and therefore,
It has been extremely difficult in terms of cost and function to make the coaxial cylindrical ozone generator 102 of this type as a small ozone generator as it is.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, a main object of the present invention is to form a pipe joint portion so that it can be arranged in a pipe passage and to make a dielectric and an electrode pair made of glass such as quartz. The purpose is to provide a pipe-type ozone generator that is composed of inexpensive structural parts such as capillary tubes, stainless wires, and stainless pipes, and contributes to simplification of structure, miniaturization, improvement of maintainability, etc. Another object of the invention is to provide a novel small ozone generator capable of supplying an ozone production amount in a range that cannot be obtained by the conventional small ozone generator and large ozone generator.

[0005]

According to the structure of the present invention, the electrode pair is coaxial with the electrode wire inserted into the small diameter hole of the capillary tube made of a dielectric material and the annular gap serving as a gas flow path in the outer peripheral direction of the capillary tube. Is formed with an electrode pipe placed in
The capillary tube and the electrode pipe are provided at both ends thereof with a pipe portion connected to the pipe end portion of the gas introduction side pipe passage or the gas discharge side pipe passage, and the capillary tube and the electrode pipe are coaxial and the gas flow passage and the pipe portion are Form a pair of pipe joints that have an inner pipe holding part and an outer pipe holding part that are fixed and held in communication with each other, and expose the end of the electrode wire from one of the pipe joints to form a wire in the capillary tube. The length is adjustable, and a connecting portion for connecting to a power source is formed at the end portion of the electrode wire and the outer peripheral portion of the electrode pipe to form a discharge space having an appropriate discharge length in the gas flow path.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention, which has achieved such an object, will be described below with reference to the drawings of the embodiments.

FIG. 1 is a schematic cross-sectional view of the pipe-type ozone generator of the present invention in the longitudinal direction, and FIG. 2 is a longitudinal sectional view for explaining the discharge space of the pipe-type ozone generator of the present invention. FIG. 3 is a schematic cross-sectional view, FIG. 3 is a cross-sectional view of the pipe-type ozone generator of the present invention taken along the line AA in FIG. 1, and FIG. 4 is an overall description of an embodiment of the pipe-type ozone generator of the present invention. FIG. 5 is a schematic diagram showing a discharge space of a conventional creeping ozone generator, and FIG. 6 is a schematic sectional view of a conventional coaxial cylindrical ozone generator.

The present invention is a test apparatus for determining the deterioration of rubber materials and the like due to ozone in a material test site, a fumigation apparatus in a hospital, a laboratory animal facility, a food factory, a storage cabinet, or a hospital, a food factory, a general household, The present invention relates to an ozone generator having a simple structure used for various purposes such as a deodorizing device in 1., and allows the entire amount of raw material gas to pass into the discharge space 10 formed between the electrode pair 2.5 and the electrode pair 2. 5 is a silent discharge ozone generator for generating ozone by applying a high voltage to the electrode 5. The electrode pair 2.5 includes an electrode wire 2 inserted into a small diameter hole of a capillary tube 3 which is a dielectric. , Gas passage 4 to the outer circumference of the capillary tube 3
Is formed by an electrode pipe 5 coaxially arranged with an annular gap that becomes a gas introduction side pipe line 8 or a gas discharge side pipe line 9 to both ends of the capillary tube 3 and the electrode pipe 5. Of the pipe portion 6a. 7a
And the capillary tube 3 and the electrode pipe 5 are coaxial with each other, and the gas flow path 4 and the pipe portion 6a. 7a
And inner tube holding portion 6b. 7
b and the outer tube holding portion 6c. 7c is provided to form a pair of pipe joint portions 6.7, and the end portion of the electrode wire 2 is exposed from at least one pipe joint portion 6 so as to expose the capillary tube 3
The length of the wire within the electrode pipe 2 is made adjustable, and the end portion of the electrode wire 2 and the outer peripheral portion of the electrode pipe 5 are connected to a power supply connecting portion 2a. 5a is formed in each gas flow path 4 to form a discharge space 10 having an appropriate discharge length.

That is, the pipe-type ozone generator 1 of the present invention
4 is an appropriate pipe passage from the gas introduction portion A for introducing the raw material gas to the gas discharge portion B for discharging the ozone gas, specifically, mainly the gas introduction side piping passage 8 and the gas discharge side piping. As shown in FIG. 2, it has a pair of pipe joint parts 6.7 that can be easily arranged in the pipe line formed from the line 9.
A silent discharge type ozone generator for generating ozone by passing the entire amount of raw material gas into the discharge space 10 formed between the electrode pair 2 and the electrode pair 2 as shown in FIG. Reference numeral 5 denotes an electrode wire 2 inserted into a small-diameter hole of a capillary tube 3 which is a dielectric, and an electrode pipe 5 coaxially arranged on the outer circumference of the capillary tube 3 with an annular gap serving as a gas flow path 4. It was formed in.

The electrode wire 2 is composed of a thin wire made of metal such as stainless steel, and the electrode wire 2 is axially movably inserted into a small diameter hole of a capillary tube 3 made of a straight tube type glass which is a dielectric material. To form a rod-shaped internal electrode body, and the electrode pipe 5 is formed from a general-purpose stainless pipe or the like having a diameter larger than that of the capillary tube 3, for example, used in sanitary equipment, building materials, etc. It was done.

As described above, the pipe-type ozone generator 1 of the present invention is arranged such that the electrode pipe 5 is coaxially arranged on the outer periphery of the capillary tube 3 with an annular gap serving as the gas passage 4. This electrode arrangement corresponds to the electrode pipe 5
Inner tube holding portions 6b. For inserting the capillary tubes 3 therein and fixing the capillary tubes 3 to both ends thereof. 7b and the outer pipe holding portion 6c for fixing the electrode pipe 5. This is made possible by forming a pair of pipe joint parts 6.7 with 7c being provided appropriately.

As shown in FIGS. 1 to 4, each of the pipe joint portions 6.7 is connected to a pipe end portion (not shown) of the gas introduction side pipe passage 8 or the gas discharge side pipe passage 9. Part 6
a. 7a, and the piping portion 6a. By connecting 7a and the pipe end portion, the entire amount of the raw material gas that has flowed from the gas introduction portion A through the gas introduction side pipe passage 8 flows into the gas flow path 4, and the gas discharge side pipe The gas is discharged from the gas discharge portion B through the passage 9. Therefore, both ends of the electrode pipe 5 and the capillary tube 3 are formed in an annular gap between the gas flow path 4 and the respective pipe portions 6.
a. 7a is fixed and held in a state of communicating with 7a.

From at least one of the pipe joint portions 6.7, the end portion of the capillary tube 3 is held by the inner pipe holding portion 6b and penetrated to the outside to be projected. The end portion of the electrode wire 2 is exposed from the small-diameter hole of the capillary tube 3, and the electrode wire 2 is axially movable within the small-diameter hole of the capillary tube 3, so that the electrode The length of the wire 2 is adjustable.

According to the present invention, the exposed end portion of the electrode wire 2 and the outer peripheral portion of the electrode pipe 5 are connected to the connecting portion 2a. 5a
To allow a high voltage to be applied to the electrode pair 2.5, and as shown in FIG. 2, in the gas flow path 4 which is an annular gap between the electrode pipe 5 and the capillary tube 3. The discharge space 10 having an appropriate discharge length determined by the line length of the electrode wire 2 in the capillary tube 3 is formed.

[0015]

As shown in FIG. 4, the pipe-type ozone generator 1 of the present invention comprises a gas introduction side pipe line 8 having a gas introduction part A and a gas discharge side pipe line 9 having a gas discharge part B. The gas discharge part B is disposed in a suitable pipe line by a pair of pipe joint parts 6.7. For example, by disposing the gas discharge part B in a fumigation chamber, a test chamber or the like, sterilization using ozone gas is performed. It can function as a deodorizing device, a test device, and the like.

In the pipe-type ozone generator 1 of the present invention, as described above, the discharge space 10 formed between the electrode pair 2.5 is formed in the gas flow path 4 into which the entire amount of the raw material gas flows. As shown in FIG. 2, the power source is activated to activate the electrode pair 2.5.
When a high voltage is applied to the discharge space 10, a silent discharge in which an infinite number of discharge columns grow is generated.

First, in the piping structure shown in FIG. 4, a pump device or the like (not shown) provided in the pipe line is operated to introduce the raw material gas from the gas introduction part A into the gas introduction side pipe line 8. Then, as shown in FIGS. 1 and 2, the raw material gas flows from the pipe portion 6a of the one pipe joint portion 6 into the gas flow passage 4 which is an annular gap between the electrode pipe 5 and the capillary tube 3, and the electrode gas It passes through the discharge space 10 having an appropriate discharge length determined by the line length of the line 2.

Next, after ozone generation reaction occurs in the discharge space 10 to generate ozone gas, the ozone gas is generated from the gas discharge part B from the pipe part 7a of the other pipe joint part 7 through the gas discharge side pipe line 9. It is what is discharged. Further, in the gas flow path 4, the inflowing raw material gas effectively cools the electrode pipe 5 and the electrode wire 2. Especially, the electrode wire 2 in the capillary tube 3 is a thin wire, so that it is sufficiently cooled. Can be made

The pipe type ozone generator 1 of the present invention is
It is possible to supply a range of ozone generation that cannot be obtained with conventional ozone generators, and a comparative example with conventional ozone generators (small ozone generator and large ozone generator) Table 1].

[0020]

[Table 1]

The pipe-type ozone generator 1 of the present invention can be applied to an ionization device by using a DC power source as a power source.

As described above, in the pipe-type ozone generator of the present invention, the dielectric and the electrode pair are composed of inexpensive structural parts such as a glass-made capillary tube, a stainless wire, and a stainless pipe, and further connected to the pipeline. By forming a pipe joint that can be easily arranged, there is no need for a casing or the like to install the electrode inside, as is the case when using conventional creeping electrodes, and the electrode surface is cooled by the source gas. Since the cooling device is simplified by the effect, the overall structure of various devices using the ozone generator can be simplified and downsized, and each component can be disassembled, and especially the internal electrode body Since the capillary tube made of glass is used in the above, it contributes to improvement of maintainability such as easy cleaning even when the electrode body is contaminated with nitrogen oxide or the like. Furthermore, the ozone generator itself is extremely suitable for downsizing because it improves the ozone generation efficiency due to the cooling effect of the electrode surface by the above-mentioned raw material gas, and because it has a simple structure, it can be manufactured at low cost, and power supply conditions The number of ozone generators and the total length can be set as well as the length of the electrode wire can be adjusted from the outside to freely form a discharge space of an appropriate discharge length, so the ozone concentration can be adjusted freely. It is an epoch-making invention that realizes a new small ozone generator that is excellent in functionality such as capable of supplying ozone generation amount in a range that could not be obtained with conventional small ozone generators and large ozone generators. is there.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a pipe type ozone generator of the present invention in a length direction.

FIG. 2 is a schematic cross-sectional view in the length direction for explaining the discharge space of the pipe-type ozone generator of the present invention.

FIG. 3 is a view showing a pipe type ozone generator according to the present invention.
FIG. 6 is a sectional view taken along line AA in FIG.

FIG. 4 is an overall explanatory view of an embodiment of the pipe type ozone generator of the present invention.

FIG. 5 is a schematic diagram showing a discharge space of a conventional creeping ozone generator.

FIG. 6 is a schematic sectional view of a conventional coaxial cylindrical ozone generator.

[Explanation of symbols]

 A gas introduction part B gas discharge part 1 pipe type ozone generator 2 electrode wire 2a connection part 3 capillary tube 4 gas flow path 5 electrode pipe 5a connection part 6 pipe joint part 6a pipe part 6b inner pipe holding part 6c outer pipe holding part Reference Signs List 7 pipe joint part 7a pipe part 7b inner pipe holding part 7c outer pipe holding part 8 gas introduction side pipe line 9 gas discharge side pipe line 10 discharge space 101 creeping ozone generator 102 coaxial cylindrical ozone generator 103 metal coating 104 glass Tube 105 electrode tube

Claims (1)

[Claims] 1. A silent discharge ozone generator for generating ozone by passing the entire amount of a source gas into a discharge space formed between an electrode pair, wherein the electrode pair is a dielectric capillary tube. The capillary tube is formed by an electrode wire inserted into the small-diameter hole of the capillary tube and an electrode pipe coaxially arranged on the outer circumference of the capillary tube with an annular gap serving as a gas flow path for the raw material gas. And a pipe part for connecting to the pipe end part of the gas introduction side pipe line or the gas discharge side pipe line is provided to both ends of the electrode pipe, and the capillary tube and the electrode pipe are coaxial and the gas flow passage and the pipe part. Form a pair of pipe joint portions provided with an inner pipe holding portion and an outer pipe holding portion that are fixedly held in a state in which the capillaries expose the end portions of the electrode wires from at least one pipe joint portion. The length of the wire in the tube is adjustable, and the ends of the electrode wire and the outer circumference of the electrode pipe are connected to a power source, respectively. A pipe-type ozone generator characterized in that a discharge space is formed.