JP2553425Y2 - Ozone generator - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an ozone generator,
In particular, the present invention relates to an ozone generator having improved cooling efficiency by simple means.

[0002]

2. Description of the Related Art Recently, air-conditioning equipment in buildings and factories has been used to deodorize air and sterilize air using ozone, so that clean air is blown into offices and building clean rooms. . Generally, FIG.
As shown in the figure, the ozone generator 2 is directly disposed in the air duct 1 of the air conditioner, and the oxygen concentration around the ozone generator 2 is increased by the fan 3 provided on the upstream side of the air duct 1. There is known a type in which the generation efficiency of the air is improved, and the generated ozone deodorizes and sterilizes the air flowing in the air duct 1 (Japanese Utility Model Application Laid-Open No. 2-6664).
No. 2).

[0003]

However, in the type in which the ozone generator 2 is disposed in the air duct 1 as described above, since the electrode portion is directly exposed to the outside to perform discharge, the electrode portion is separately provided. Many do not have a cooling structure, and the heat radiation at the electrode portion is not always sufficient. As a result, it has not been possible to stably generate ozone over a long period of time, or to perform high-power operation such as obtaining a large amount of low-concentration ozone by flowing a large amount of air. For this reason, conventionally, high-concentration ozone obtained by an ozone generator was blown into the air duct of an air conditioner, and the ozone was diluted with internal air to deodorize or sterilize air. However, this type has a problem that the equipment becomes complicated.

Accordingly, an object of the present invention is to provide an ozone generator having a simple structure and high cooling efficiency capable of stably obtaining ozone for a long time.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention provides a pair of support plates having ventilation holes.
Are placed in front and back, and a contact consisting of a heat sink is
Multiple ground electrodes are arranged side by side in the left and right direction to ventilate the gap between each heat sink.
An air passage leading to the hole is formed, and each heat sink has the same
A hole is provided on one axis, and the surface of this hole is made of a dielectric.
A high-voltage electrode in the form of a rod coated with a thin film is inserted .

[0006]

According to the above-described means, when air passes through the flow path formed between the heat radiating plates, a discharge occurs between the ground electrode also serving as the heat radiating plate and the high voltage electrode penetrating the heat radiating plate. To generate ozone. Further, since the ground electrode itself also serves as a heat radiator, the heat radiator is cooled by the air passing through the flow path, and as a result, the cooling efficiency of the ground electrode is improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 to 4 show an example in which an ozone generator 10 according to the present invention is disposed in a ventilation duct 11 of an air conditioner. The ozone generator 10 includes a pair of front and rear support plates 12 and 13, and the support plates 12 and 13.
And the electrode portion 14 sandwiched between them. Support plate 1
Each of the air ducts 2 and 13 is formed of an aluminum rectangular flat plate having substantially the same cross-sectional shape as the air duct 11, and the outer peripheral surface thereof is in close contact with the inner peripheral surface of the air duct 11. Also, a large number of ventilation holes 15 are provided in the upper and lower halves of each of the support plates 12 and 13.
Are formed along the left-right direction, and all the air flowing in the ventilation duct 11 is guided to the downstream side through the ventilation holes 15.

The pair of supporting plates 12 and 13 are integrally formed by a pair of connecting plates 16 and 17 arranged vertically, and an electrode portion 14 is provided between the supporting plates 12 and 13.
Is formed. The connecting plates 16, 1
The material of 7 is preferably aluminum as in the case of the support plates 12 and 13.

On the upper surface of the upper connecting plate 16 and the lower surface of the lower connecting plate 17, a number of fins 18 are provided upright at regular intervals along the longitudinal direction. These fins 18 function not only as heat sinks for the electrodes but also as ground electrodes, and are provided with the support plates 12 and 13 and the connection plates 16 and 13.
It is formed of aluminum similarly to 17. Each fin 18 is formed of a thin plate having a rectangular shape,
The support plates 12 and 13 have a height corresponding to the ventilation holes 15 and are provided in the gaps between the adjacent fins 18.
An air flow path 19 flowing between the three is formed. At substantially the center of all the fins 18, the through holes 20 are formed on the same axis.
A rod-shaped high-voltage electrode 21 whose surface is covered with a dielectric penetrates through the through-hole 20.

As shown in FIG. 4, the high-voltage electrode 21 includes a cylindrical electrode rod 22 made of aluminum or copper and a dielectric 23 covering the entire surface of the electrode rod. The dielectric 23 is formed of a cylindrical body having a thickness of about 1 mm, and is integrally joined to the electrode rod 22 by a low-melting alloy 24 such as solder or a conductive adhesive. Note that, as the dielectric 23, glass, quartz, alumina, or the like is generally used. Particularly, by using a material having a high dielectric constant such as barium titanate, the applied voltage for maintaining the discharge can be reduced. Has an effect of suppressing nitrogen oxides which are generated as a by-product when generating. In the case of joining using a low melting point alloy 24 such as solder, the molten low melting point alloy 24 is poured into a cylindrical body constituting the dielectric 23, and the electrode rod 22 is inserted into this. In addition, since the low melting point alloy 24 is densely buried between the two and integrated therewith, a uniform discharge can be obtained over the entire electrode rod 22 and the cooling efficiency can be improved. This is also advantageous.

In the above embodiment, a fan 25 is integrally mounted on the upstream side of the ozone generator 10, and an ozone decomposition catalyst 26 such as activated carbon is provided on the downstream side of the ozone generator 10. Have been.

Next, the operation of the ozone generator 10 provided in the ventilation duct 11 will be described. First, the amount of air flowing through the air duct 11 is further increased by the fan 25, passes through the ventilation holes 15 of the support plate 12 located on the upstream side, and is formed in the gap between the fins 18.
It is led to 9. At this time, an AC high voltage is applied to the high voltage electrode 21 and the one fin 18 is grounded, so that when air flows through the flow path 19 as shown in FIG. And fins 18 are discharged to generate ozone. The air containing ozone undergoes air sterilization and deodorization while passing through the ventilation holes 15 provided in the downstream support plate 13, and further decomposes ozone, which is disposed downstream of the ventilation duct 11. By passing through the catalyst 26, the deodorization is more reliably performed, and the clean air after the ozone is adsorbed is blown into the room from the blower port.

As described above, in the above embodiment, the electrodes are exposed to the outside and ozone is generated by contacting the air flowing through the air duct 11, but the ground electrode is constituted by the fins 18 and Since the ground electrode is constantly cooled by flowing air therebetween, it is possible to prevent heat generation in the discharge portion, and to stably generate ozone for a long time, as described above. It can withstand even high power operation in which a large amount of air flows, and can obtain a large amount of air having a low ozone concentration. Further, in this embodiment, there is no need to provide a separate cooling mechanism, so that the equipment is simplified. Furthermore, since the high-voltage electrode 21 is held simply by being inserted into the through hole 20 provided in the fin 18, the replacement operation of the high-voltage electrode 21 can be easily performed.

Although the above embodiment has been described with respect to an example in which the pair of electrode portions 14 are arranged above and below the support plates 12 and 13, it is not always necessary to provide them on both sides. Also, the shape and number of the ventilation holes 15 formed in the support plates 12 and 13 are not limited to those in the above-described embodiment, and the shape and number of the fins 18 are not limited to those in the above-described embodiment. .

[0015]

As described above, according to the ozone generator of the present invention, since the ground electrode is constituted by the heat sink, cooling at the discharge portion can be sufficiently performed without providing a separate cooling mechanism. It can be carried out. And, despite such a simple structure, it is possible to stably obtain the generation of ozone over a long period of time, and also to perform high-power operation such as obtaining a large amount of low-concentration ozone by flowing a large amount of air. Can be performed.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is an explanatory diagram showing a configuration of an electrode unit of the ozone generator.

FIG. 4 is an enlarged sectional view of a portion B in FIG. 3;

FIG. 5 is an explanatory diagram showing an example of a conventional ozone generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ozone generator 18 Fin 19 Flow path 20 Through hole 21 High voltage electrode 22 Electrode rod 23 Dielectric 24 Low melting point alloy

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of support plates each having a ventilation hole formed in front and rear directions.
Ground electrode consisting of a heat sink between these support plates
Are arranged side by side in the left-right direction, and through the ventilation holes
And the heat radiation plate has the same axis
A through-hole is formed on the top, and the surface of this through-hole is coated with a dielectric.
An ozone generator, wherein a rod-shaped high voltage electrode is inserted .