JPH11157806A - Ozone generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozone generating device excellent in ozonizing efficiency by generating good electrical discharge in a vessel by avoiding abnormal electrical discharge, etc. SOLUTION: In the ozone generating device in which the first electrode 10 housed at a center part of the vessel 6 to which the air for ozonizing is supplied and the second electrode 5 arranged opposite to the first electrode 10 are provided and the ozone is generated by applying voltage between the first electrode 10 and the second electrode 5, opposite edge parts 10a and 10b of the first electrode 10 oppositing to the second electrode 5 are formed in rectangular.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an ozone generator, and more particularly, to an ozone generator that generates ozone by applying a voltage to air in a container.

[0002]

2. Description of the Related Art FIG. 3 shows a schematic configuration of a conventional ozone generator. In FIG. 3, the ozone generator includes a diaphragm type air compressor 1 and a container 6 to which air is supplied.
A cylindrical rotary electrode 4 accommodated in a container 6, and a fixed electrode 5 formed on the peripheral surface of the container 6 to face the rotary electrode 4.
And a motor 2 that rotationally drives the rotating electrode 4.

The air sucked from the suction valve 1a of the air compressor 1 is compressed, discharged from the discharge valve 1b, and supplied into the container 6 from the supply port 6a. A high voltage is applied between the rotating electrode 4 and the fixed electrode 5.
When the high voltage is applied, a discharge is generated between the rotating electrode 4 and the fixed electrode 5 via the air sandwiched therebetween, and the air is converted into ozone to generate ozone. Ozone generated in the container 6 is taken out from the ozone outlet 6b.

[0004]

In the conventional ozone generator, a concentrated discharge is generated between the rotating electrode 4 and the fixed electrode 5 and a stable discharge with sufficiently high uniformity is obtained. It was not realized. For this reason, there was a problem that the generation efficiency of ozone with respect to electric power supplied from the outside was not sufficiently high. Further, there is a problem that the rotating electrode 4 is scorched or partially damaged.

On the other hand, the inventor of the present invention has found that the dominant causes of unstable discharge and abnormal discharge generated between the rotating electrode 4 and the fixed electrode 5, scorching and partial burning of the rotating electrode 4. The reason is that the shapes of the opposed edge portions 4a and 4b of the rotating electrode 4 facing the fixed electrode 5 remain angular,
It was found that it was not diced. The present invention is based on such knowledge of the inventor.

It is an object of the present invention to provide an ozone generating apparatus which solves the above-mentioned problems of the prior art and generates good discharge in a container and has excellent ozonization efficiency.

[0007]

To achieve the above object, an ozone generator according to the present invention comprises a first electrode housed in a central portion of a container to which air for ozonization is supplied, and An ozone generator that includes a second electrode disposed opposite to the electrode, and generates ozone by applying a voltage between the first electrode and the second electrode; The opposed edge portion facing the two electrodes is formed in a square shape.

Preferably, the first electrode has a cylindrical shape, and opposing edge portions at both ends in the axial direction of the cylindrical shape are squared.

It is preferable that the facing edge portion is square-cut in an arc shape.

[0010] Further, the facing edge portion is 1 mm or more and 5 mm or more.
It is preferable to be squarely cut into an arc shape having a radius of not more than mm. Further, it is more preferable that the opposing edge portion is cut into an arc shape having a radius of 1 mm or more and 1.5 mm or less.

It is preferable that the opposite edge portion is cut into a polygonal shape.

It is preferable that the first electrode is a rotating electrode that is driven to rotate, and the second electrode is a fixed electrode disposed on a peripheral surface of the container.

In the above-mentioned invention, since the opposing edge of the first electrode is cut off, abnormal discharge and the like between the opposing second electrode can be suppressed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial sectional view of an ozone generator according to an embodiment of the present invention.

In FIG. 1, an ozone generator includes a diaphragm type air compressor 1, a container 6 to which air is supplied, a rotating electrode 10 as a first electrode housed in the container 6, and a rotating electrode 10. The apparatus includes a fixed electrode 5 as a second electrode formed facing the motor, and a motor 2 for rotatingly driving the rotating electrode 10. In the container 7, a rotating shaft 7 is provided so as to pass therethrough, and the rotating electrode 10 is fixed to the rotating shaft 7 in the container 6. An insulating joint 3 is provided between the motor 2 and the end plate of the container 6, whereby the motor 2, the air compressor 1 and the like are electrically insulated from the rotary electrode 10 and the like and supported.

The container 6 has a cylindrical shape, and the peripheral surface of the container 6 is formed of a conductor, and the peripheral surface serves as the fixed electrode 5. The fixed electrode 5 is electrically grounded. Container 6
An insulating cylinder 8 made of Teflon, ceramics, or the like is attached to the inner peripheral surface of the substrate.

The rotating electrode 10 has a cylindrical shape and is arranged concentrically with the fixed electrode 5. In addition, the rotating electrode 10
Is hollow so as not to be unnecessarily heavy, and is fixed to the rotating shaft 7 at both end surfaces. In addition, the rotating electrode 10 is formed of a thin-walled cylindrical material to make it lightweight, and the thickness of the thin-walled cylindrical material is, for example, 1 mm to 5 mm. The diameter D of the rotating electrode 10 is
The size varies from 50 mm to 100 mm, depending on the model.

The distance d between the peripheral surface of the rotating electrode 10 and the peripheral surface of the fixed electrode 5 is set to about 2 mm.

As shown in FIG. 1, unlike the case shown in FIG. 3, the fixed electrodes 5 at both ends in the axial direction of the rotating electrode 10 are provided.
The opposing edge portions 10a and 10b opposing to each other are cut into an arc shape and edge-treated.

Since the opposing edge portions 10a and 10b are formed in a circular arc shape, the opposing edge portions 10a and 10b are formed.
Can be formed smoothly, and unstable abnormal discharge between the rotating electrode 10 and the fixed electrode 5 can be avoided.

In order to effectively avoid abnormal discharge and the like, the arc-shaped radius of curvature R of the opposing edge portions 10a and 10b should be set to 1 mm or more according to experimental results. Was effective. In order to reduce the weight of the rotating electrode 10, it is practical and desirable that the thickness of the thin cylindrical member is 5 mm or less.
The size of the arc-shaped curvature radius R of a and 10b needs to be 5 mm or less. Therefore, the opposing edge portions 10a, 10
The size of the arc-shaped curvature radius R of b is 1 mm or more and 5 mm
It is set as follows.

In addition, to effectively avoid abnormal discharge and the like,
And from the viewpoint of both ease of manufacture of the rotating electrode 10,
It is further desirable that the magnitude of the arc-shaped radius of curvature R of the opposing edge portions 10a and 10b be 1 mm or more and 1.5 mm or less.

The radius of curvature R depends on the size of the rotating electrode 1.
It was effective to set as described above without depending on the diameter D of 0 or the distance d between the peripheral surface of the rotating electrode 10 and the peripheral surface of the fixed electrode 5.

When the rotating shaft 7 is driven to rotate, the connecting rod 9 connected to the rotating shaft 7 in a piston manner makes a piston movement, and air is sucked from the suction valve 1a of the diaphragm type air compressor 1. The sucked air is compressed, discharged from the discharge valve 1b, and supplied into the container 6 from the supply port 6a of the container 6.

When a high voltage is applied between the rotating electrode 10 and the fixed electrode 5, the peripheral surface of the rotating electrode 10 and the peripheral surface of the fixed electrode 5 disposed concentrically with the rotating electrode 10 are applied. , A discharge such as a corona discharge or a streamer discharge is generated in a plane distribution through the sandwiched air. At this time, the opposing edge portions 10a,
10b is formed in a circular arc shape so that the rotary electrode 1
Occurrence of concentrated discharge, abnormal discharge, and the like between 0 and the fixed electrode 5 can be avoided, and stable and good discharge can be realized. As a result, scorching or partial burning of the rotating electrode 10 can be avoided, and the air can be efficiently ozonized.

In the description of the above-described embodiment, the facing edges 10a and 10b are formed in the shape of a circular arc, but the shape of the rectangular cutting may be a smooth shape. The shape is not limited to the arc shape, but may be, for example, a polygonal shape.

In the above-described embodiment, an example in which the diaphragm type air compressor 1 is provided in the ozone generator as shown in FIG. 1 has been described. The configuration is not limited to the case shown in FIG. 1, and for example, as shown in FIG. 2, a configuration in which the rotary shaft 7 is simply driven to rotate by the motor 2 without providing a diaphragm type air compressor or the like may be used.

In the above description of the embodiment, a rotary ozone generator is taken as an example of the ozone generator, and the rotary electrode 10 is used as the first electrode and the fixed electrode 5 is used as the second electrode. The ozone generator according to the present invention may be an ozone generator using a fixed electrode. In this case, both the first electrode and the second electrode are fixed electrodes.

Further, although an example has been described in which the opposing edge portions at both ends in the axial direction of the rotary electrode 10 are cut, only the opposing edge portions at one end may be formed, not necessarily at both ends.

[0031]

As described above, according to the structure of the present invention, the opposing edge portion of the first electrode facing the second electrode is formed in a square shape, so that the first electrode and the second electrode are separated from each other. It is possible to eliminate the cause of unstable discharge and abnormal discharge occurring during the period, the cause of scorching and partial burning of the first electrode,
It is possible to provide an ozone generator which generates good discharge in a container and has excellent ozonization efficiency.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a schematic configuration of an ozone generator showing one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a modified example of the ozone generator showing one embodiment of the present invention.

FIG. 3 is a partial sectional view showing a schematic configuration of a conventional ozone generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air compressor 1 1a Intake valve 1b Exhaust valve 2 Motor 3 Insulation joint 5 Fixed electrode 6 Container 6a Inlet 7 Rotary shaft 8 Insulating cylinder 10 Rotary electrode 10a, 10b Opposite edge

Claims (7)

[Claims] A first electrode housed in a central portion of a container to which ozonation air is supplied; and a second electrode disposed opposite to the first electrode. In the ozone generating apparatus for generating ozone by applying a voltage between the second electrode and the second electrode, an opposing edge portion of the first electrode facing the second electrode is cut into a square. Generator. 2. The ozone generator according to claim 1, wherein the first electrode has a cylindrical shape, and opposing edges at both ends in the axial direction of the cylindrical shape are cut off. 3. The ozone generator according to claim 1, wherein said opposed edge portion is cut into an arc shape. 4. The ozone generator according to claim 3, wherein said opposed edge portion is cut into an arc shape having a radius of 1 mm or more and 5 mm or less. 5. The opposed edge portion is 1 mm or more and 1.5 m or more.
The ozone generator according to claim 4, wherein the ozone generator is cut into an arc shape having a radius of not more than m. 6. The ozone generator according to claim 1, wherein said opposed edge portion is cut into a polygonal shape. 7. The ozone according to claim 1, wherein the first electrode is a rotating electrode that is driven to rotate, and the second electrode is a fixed electrode disposed on a peripheral surface of the container. Generator.