JP2014015378A - Ozonizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ozonizer capable of efficiently generating high-concentration ozone.SOLUTION: An ozonizer 1 is configured such that: a cylindrical outer electrode 2 is disposed outside an inner electrode 3; a dielectric 4 is provided on an inner surface of the outer electrode 2; and a voltage is applied to a discharge space 6 between the inner electrode 3 and the outer electrode 2 while supplying a raw material gas thereto to generate discharge, thereby generating ozone. The inner electrode 3 is configured to have protrusions 3a which are formed on an outer surface thereof by twisting together a plurality of metal wires and is disposed so that electric fields concentrate in the vicinity of the protrusions 3a.

Description

  The present invention relates to an ozonizer technique.

  Conventionally, various techniques related to an ozonizer (ozone generator) that generates ozone (ozone gas) from a source gas containing oxygen are known.

The ozonizer is provided with a dielectric on one of the two electrodes, and generates ozone by generating a discharge by applying a voltage while supplying the source gas to the discharge space between the two electrodes. What is comprised so that it does is publicly known (for example, refer patent document 1).
In the ozonizer, for example, one of two electrodes is a cylindrical outer electrode (ground electrode), and the other of the two electrodes is an inner electrode (high voltage electrode) of a metal wire. A dielectric is provided on the inner surface (inner peripheral surface) of one of the electrodes, and a discharge space is arranged on the entire inner side of the dielectric.

JP 2009-62276 A

However, in the ozonizer, since the discharge space is arranged on the entire inner side of the dielectric, the electric field is dispersed on the entire inner side of the dielectric.
For this reason, in the said ozonizer, when the operation | movement which generate | occur | produces discharge in discharge space and produces | generates ozone is performed, the electric field strength in the said discharge space will not become high, and it cannot say that high concentration ozone cannot be produced | generated efficiently. There was a problem.

  This invention is made | formed in view of the above situations, and makes it a subject to provide the ozonizer which can produce | generate high concentration ozone efficiently.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, a cylindrical outer electrode is disposed outside the inner electrode, a dielectric is provided on the inner surface of the outer electrode, and a source gas is provided in a discharge space between the inner electrode and the outer electrode. The ozonizer is configured to generate ozone by generating a discharge by applying a voltage while supplying a metal, and has a convex portion formed on the outer surface by twisting a plurality of metal wires. The electric field concentrates in the vicinity of the convex portion of the inner electrode.

  According to a second aspect of the present invention, a core member disposed inside the inner and outer electrodes is provided, and the inner electrode is spirally wound around an outer surface of the core member.

  As effects of the present invention, the following effects can be obtained.

  That is, according to the present invention, ozone with a high concentration can be generated efficiently.

The front schematic diagram which showed the internal structure of the ozonizer which concerns on embodiment of this invention. The side schematic diagram. The partial enlargement figure of the ozonizer concerning the embodiment of the present invention.

  Next, an ozonizer 1 according to an embodiment of the present invention will be described with reference to FIGS.

The ozonizer 1 generates ozone (ozone gas) from a raw material gas (a gas containing oxygen (for example, a high-purity oxygen gas having an oxygen concentration of 99.9% or more)).
As shown in FIG. 1 or 2, the ozonizer 1 includes an outer electrode 2, an inner electrode 3, a dielectric 4, a power source (AC power source) 5, a discharge space 6, a space 7 in which no discharge occurs, Is provided.

The outer electrode 2 and the inner electrode 3 of the ozonizer 1 are metal electrodes and are arranged so as to be spaced from each other.
The outer electrode 2 of the ozonizer 1 is configured as a ground electrode, and the inner electrode 3 is configured as a high voltage electrode.
The dielectric 4 of the ozonizer 1 is provided on the outer electrode 2. The dielectric 4 of the ozonizer 1 is disposed on the surface of the outer electrode 2 facing the inner electrode 3.
The ozonizer 1 is configured such that a voltage (AC voltage) from the power source 5 is applied between the outer electrode 2 and the inner electrode 3 in the vicinity of the dielectric 4 (between the dielectric 4 and the inner electrode 3). It is configured to discharge into the space between the electrode 2 and the inner electrode 3.
A space between the outer electrode 2 and the inner electrode 3 (between the dielectric 4 and the inner electrode 3) in the vicinity of the dielectric 4 of the ozonizer 1 is configured as a discharge space 6. The discharge space 6 of the ozonizer 1 is disposed in the vicinity of the dielectric 4.

In the ozonizer 1 configured as described above, a source gas is supplied into the ozonizer 1, and the source gas supplied into the ozonizer 1 reaches the discharge space 6 and is applied with a voltage from the power source 5 to discharge. By being discharged in the space 6, oxygen atoms are dissociated from oxygen molecules in the source gas in the discharge space 6, and the dissociated oxygen atoms and oxygen molecules are combined to generate ozone (O3). The generated ozone is configured to flow out of the ozonizer 1.
In this way, the ozonizer 1 is configured to generate ozone by generating a discharge by applying a voltage to the discharge space 6 between the outer electrode 2 and the inner electrode 3 while supplying the raw material gas. Is done. In this way, the ozonizer 1 is configured so that the source gas or ozone flows in the ozonizer 1.

The space 7 where the discharge of the ozonizer 1 is not generated is arranged in the vicinity of the dielectric 4.
The space 7 in which the discharge of the ozonizer 1 does not occur indicates a space 7 in the vicinity of the dielectric 4 in which no discharge occurs even when the discharge space 6 is discharged by applying a voltage from the power source 5. .

The ozonizer 1 is configured such that no discharge is generated in the space 7 where no discharge occurs even when a voltage is applied while the source gas is supplied in the discharge space 6 to generate a discharge.
The ozonizer 1 is configured so that a discharge space 6 and a space 7 in which no discharge occurs are continuous along the dielectric 4. The ozonizer 1 includes a discharge space 6 (a place where discharge is performed) and a space 7 where no discharge occurs along the dielectric 4. The ozonizer 1 is configured such that a space 7 in which no discharge occurs is disposed in the middle of the flow path of the source gas or ozone in the vicinity of the dielectric 4.

Next, a more specific configuration of the ozonizer 1 will be described.
The outer electrode 2 of the ozonizer 1 is formed in a cylindrical shape.
The dielectric 4 of the ozonizer 1 is composed of a member made of a glass material, for example. The dielectric 4 of the ozonizer 1 is provided over the entire inner surface (inner peripheral surface) of the outer electrode 2.

The inner electrode 3 of the ozonizer 1 is configured by twisting a plurality of (three in this embodiment) metal wires. The inner electrode 3 of the ozonizer 1 is configured by forming irregularities on the outer surface of the inner electrode 3 by twisting the plurality of metal wires. The inner electrode 3 of the ozonizer 1 has a convex portion 3a formed on the outer surface of the inner electrode 3 by twisting the plurality of metal wires (see FIG. 3).
The inner electrode 3 of the ozonizer 1 is disposed inside the outer electrode 2 (dielectric 4) so that the discharge space 6 is formed. The inner electrode 3 of the ozonizer 1 is disposed so as to extend from one opening of the outer electrode 2 to the other opening. The inner electrode 3 of the ozonizer 1 is arranged so that the electric field concentrates in the vicinity of the convex portion 3a of the inner electrode 3 (the end portion of the convex portion 3a of the inner electrode 3 located on the dielectric 4 side).

The white arrows in the figure indicate the flow direction of the source gas or ozone in the ozonizer 1 where the source gas is supplied into the ozonizer 1 and the ozone generated in the ozonizer 1 flows out of the ozonizer 1.
The ozonizer 1 is configured so that the source gas or ozone flows along the axial direction of the outer electrode 2.
The ozonizer 1 is configured such that a source gas is supplied into the ozonizer 1 from one opening in the outer electrode 2.
The ozonizer 1 is configured to generate ozone in the ozonizer 1 by generating a discharge in the discharge space 6 in a state where the source gas is supplied into the ozonizer 1 and reaches the discharge space 6.
The ozonizer 1 is configured such that ozone generated in the ozonizer 1 flows out from the other opening of the outer electrode 2.
In the ozonizer 1, for example, a fan is provided in one opening or the other opening of the outer electrode 2, and when the fan is driven, source gas is supplied into the ozonizer 1, or ozone is supplied into the ozonizer 1. Configured to flow out of.

As described above, in the ozonizer 1, the inner electrode 3 is configured to have the convex portion 3 a formed on the outer surface of the inner electrode 3 by twisting a plurality of metal wires, and the convex of the inner electrode 3. It arrange | positions so that an electric field may concentrate on the vicinity of the part 3a.
For this reason, in the ozonizer 1, the discharge space 6 is not arranged on the entire inner side of the dielectric 4, and the electric field is not distributed on the entire inner side of the dielectric 4.
In the ozonizer 1, the electric field concentrates on the convex portion 3 a (end portion of the convex portion 3 a) of the inner electrode 3 located on the dielectric 4 side of the outer surface of the inner electrode 3.
Therefore, in the ozonizer 1, when the discharge space 6 is operated to generate a discharge to generate ozone, the discharge space 6 is compared with a structure in which the discharge space 6 is arranged entirely inside the dielectric 4. The electric field strength in the space 6 can be increased, and high concentration ozone can be efficiently generated.

Further, in the ozonizer 1, even when the operation of generating ozone is performed, no discharge occurs in the space 7 where no discharge occurs, and therefore no temperature rise due to the occurrence of discharge occurs.
For this reason, in the ozonizer 1, the temperature rise in the discharge space 6 when the operation of generating ozone is performed is suppressed by being affected by the temperature rise due to the occurrence of the discharge in the space 7 where no discharge occurs. Will be.
Thus, in the ozonizer 1, compared with a configuration in which the discharge space 6 is arranged on the entire inside of the dielectric 4 (a configuration in which the space 7 in which no discharge is generated in the vicinity of the dielectric 4 is not provided). It is possible to suppress the temperature rise of the discharge space 6 when performing the operation of generating.
Therefore, in the ozonizer 1, when the operation | movement which produces | generates ozone is performed, it can suppress that the produced | generated ozone is decomposed | disassembled with a heat | fever (reduction | reduction to oxygen).
Therefore, according to the ozonizer 1, it is possible to efficiently generate ozone having a high concentration as compared with a configuration in which the discharge space 6 is arranged on the entire inside of the dielectric 4.
Moreover, according to the ozonizer 1, since the temperature rise of the discharge space 6 when the operation | movement which produces | generates ozone is performed is suppressed, even when it installs in a high temperature environment (for example, 60 degreeC or more), it is a dielectric material. Compared with the configuration in which the discharge space 6 is arranged on the entire inner side of 4, ozone having a higher concentration can be efficiently generated.

The ozonizer 1 has a core member 8.
The core member 8 of the ozonizer 1 is a member formed in a cylindrical shape made of, for example, a glass material. The core member 8 of the ozonizer 1 is configured to have an outer diameter smaller than the inner diameter of the outer electrode 2 and the dielectric 4.
The ozonizer 1 is configured by the inner electrode 3 being spirally wound around the outer surface of the core member 8.
The core member 8 around which the inner electrode 3 of the ozonizer 1 is wound is disposed on the inner side of the outer electrode 2 (dielectric 4) so that the axial center thereof coincides with the axial center of the outer electrode 2.
In the ozonizer 1, the core member 8 around which the inner electrode 3 is wound is disposed, and the outer surface (the convex portion 3 a of the inner electrode 3) on the outer side (outer electrode 2 side) of the inner electrode 3 and the outer electrode 2 (dielectric). A discharge space 6 is formed in a space between the body 4) and the body 4).

As described above, the ozonizer 1 includes the core member 8 disposed inside the outer electrode 2, and the inner electrode 3 is spirally wound around the outer surface of the core member 8.
For this reason, in the ozonizer 1, the source gas supplied into the ozonizer 1 is circulated so as to be brought closer to the discharge space 6 by the core member 8.
Therefore, according to the ozonizer 1, the ozone gas can be efficiently generated by reaching a larger amount of the raw material gas discharge space 6 as compared with the case where the inner electrode 3 does not have the core member 8.

Further, the core member 8 of the ozonizer 1 is configured to have a diameter larger than ½ of the inner diameter of the outer electrode 2.
Since it is configured in this way, according to the ozonizer 1, it is possible to reliably reach the large number of source gas discharge spaces 6 and efficiently generate ozone gas.

In the ozonizer 1, the inner electrode 3 is spirally wound around the outer surface of the core member 8 at a predetermined interval so that the electric field is not dispersed in the vicinity of the convex portion 3 a (end portion of the convex portion 3 a) of the inner electrode 3. Configured.
Therefore, according to the ozonizer 1, it is possible to generate ozone with a higher concentration more efficiently than a configuration in which the discharge space 6 is arranged on the entire inside of the dielectric 4.

DESCRIPTION OF SYMBOLS 1 Ozonizer 2 Outer electrode 3 Inner electrode 4 Dielectric 5 Power supply 6 Discharge space 7 Space where discharge does not occur 8 Core member

Claims (2)

A cylindrical outer electrode is disposed outside the inner electrode, a dielectric is provided on the inner surface of the outer electrode, and a voltage is applied while supplying a source gas to a discharge space between the inner electrode and the outer electrode. An ozonizer configured to generate ozone by generating an electrical discharge,
The inner electrode is configured to have a convex portion formed on the outer surface by twisting a plurality of metal wires and arranged so that the electric field concentrates in the vicinity of the convex portion of the inner electrode.
Ozonizer.   2. The ozonizer according to claim 1, further comprising a core member disposed inside the inner and outer electrodes, wherein the inner electrode is spirally wound around an outer surface of the core member.

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