JPH0617211B2 - Ozonizer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a so-called ozonizer for supplying a gas such as air or oxygen to a silent corona discharge area and generating ozone gas from the gas.

2. Description of the Related Art Conventionally, this type of ozonizer is provided with a pair of electrodes through an air or oxygen gas passage and a dielectric layer, and a high voltage AC power source is connected between the electrodes to generate a silent corona discharge therebetween. At the same time, a gas such as air or oxygen is supplied to the passage to turn it into ozone gas.

The power efficiency of ozone generation at this time is extremely low, which is only a few percent. That is, most of the power consumption becomes heat, which raises the temperature of each electrode, the dielectric, the gas, and the like, and this rise in temperature lowers the density of the gas and lowers the ozone gas generation efficiency.

In order to prevent this, the above electrodes have been cooled with a cooling medium such as air until now.

Problems to be Solved by the Invention When each electrode is cooled with a cooling liquid, due to the nature of the ozonizer,
Since a high-voltage AC power supply is used, it is generally difficult to ensure its insulating property.

The difficulty is especially pronounced when water is used as the cooling medium.

An object of the present invention is to prevent a decrease in ozone gas generation efficiency due to a temperature rise in the conventional ozonizer, and an electrode of the ozonizer when water is used as a cooling medium to prevent the temperature rise. To ensure the insulation of the.

Means for Solving Problems A liquid refrigerant chamber is provided on one side of an ozonization area via a planar electrode, and a liquid electrode is formed on the other side via a planar dielectric,
A high-voltage AC power supply is connected between the planar electrode and the liquid electrode,
Further, the liquid refrigerant chamber is connected to an electric resistance formed by the refrigerant in the insulating elongated tube, and the electric resistance is further grounded, and the liquid electrode is grounded.

Action The high-voltage alternating current from the high-voltage alternating-current power supply is applied between the planar electrode and the liquid electrode, and silent corona discharge is generated in the ozonization area existing between the electrodes. At the same time, a gas to be ozoned such as air or oxygen is supplied to the ozonization area, and the silent corona discharge is applied to this gas to ozone it.

At this time, the planar electrode is cooled by the liquid supplied to the liquid refrigerant chamber in contact with the planar electrode, and the liquid electrode is cooled by cooling the liquid itself supplied from the outer refrigerant inlet.

In this way, the gas to be ozonized flowing through the ozonization zone is cooled from both inside and outside thereof and is ozonized at a low temperature.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings. A liquid refrigerant chamber 3 is provided inside a cylindrical ozonization zone 1 via a cylindrical planar electrode 2, and a cylindrical dielectric 4 is provided outside. A cylindrical liquid electrode 5 is concentrically provided with a cylindrical wire mesh conductor 5a between which the surface electrode 2 and the liquid electrode 5 are immersed, and a high-voltage AC power supply 6 is connected to the liquid coolant chamber 3 At the refrigerant inlet 7 at one end of the coil-shaped cooling tube 8 formed of an insulating elongated tube
Of the coil-shaped cooling pipe 8 and the other end of the coil-shaped cooling pipe 8 communicates with the liquid outlet 10 at the other end of the liquid refrigerant chamber 3 by another circulation pipe 11. A liquid refrigerant is flown in to form an electric resistance 12, and a midpoint 12a of the electric resistance and the liquid electrode 5 are grounded 13, respectively.
It is an ozonizer that did 14.

An alternating voltage is applied between the planar electrode 2 and the liquid electrode 5 via a cylindrical wire mesh conductor 5a by a high voltage AC power source to generate silent corona discharge in the ozonization area 1 and to the ozonization area 1 as well. The gas to be ozoned 18 such as air and oxygen sent through the gas pump 15, the gas pipe 16, and the gas inlet 17 is supplied as ozone gas 19.
It is taken out through the gas outlet 20, the ozone gas pipe 21, and the ozone gas pressure regulating valve 22.

At this time, a coolant such as water or oil cooled from the coolant inlet 7 is supplied to the liquid refrigerant chamber 3 inside the planar electrode 2 to cool the ozonization area 1 from the inside thereof, and the ozonization area 1 is cooled. On the outer side, the liquid electrode 5 is cooled by the liquid fed from the outer liquid inlet 23, and the ozonization action in the ozonization zone 1 is performed at a low temperature to improve its efficiency.

Further, the refrigerant supplied from the above-mentioned refrigerant inlet 7 is the cooling tank 24
The refrigerant that is cooled when passing through the coil-shaped cooling pipe 8 immersed in the cooling liquid 25 such as water or oil therein, and that is discharged from the refrigerant outlet 10 passes through the circulation pipe 11 and passes through the coil-shaped cooling pipe 8. It is something that is returned to and cooled again. 27 is a cooling pipe 8
It is a refrigerant pump provided by intervening in the installation grounding parts 12a, 12a in the middle of.

At this time, the planar electrode 2 is grounded through the electric resistance 12 formed of the refrigerant in the liquid refrigerant chamber 3 and the refrigerant in the coil cooling pipe 8, and the refrigerant passage in the coil cooling pipe 8 is narrow and sufficiently long. By increasing the electric resistance value, the planar electrode 2
The leakage current from can be kept extremely small.

Further, the liquid supplied from the outer liquid inlet 23 is sent through the liquid pump 28, the cooler 29 and the liquid pipe 30, and the liquid discharged from the liquid outlet 31 is returned to the liquid pump 28 described above.

Reference numeral 32 is a casing, and 33 is a cooling fin.

Effect The present invention does not raise the temperature of the ozonization zone because the ozonization zone is cooled from the inside by the liquid in the liquid refrigerant chamber and is efficiently cooled from the outside by the liquid electrode. Can occur,
The generation efficiency is not hindered by the temperature rise.

Further, since the present invention is configured as described above, when water is used as the refrigerant, its cooling efficiency is extremely good and economical.

In particular, the liquid refrigerant chamber and the electric resistance formed by the refrigerant in the insulating elongated tube are connected to each other and grounded via the electric resistance, and thus the planar electrode facing the liquid refrigerant chamber. The insulating property can be ensured, and the liquid refrigerant can be circulated and cooled while keeping the leakage current from the planar electrode extremely small.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an ozonizer showing an embodiment of the present invention,
FIG. 2 is a sectional view taken along the line II-II in FIG. 1 ... Ozonization area 2 ... Sheet electrode 3 ... Liquid refrigerant chamber 4 ... Cylindrical dielectric 5 ... Liquid electrode 5a ... Cylindrical wire mesh conductor 6 ... High voltage AC power supply 12 ... Electric resistance

Claims (7)

[Claims] 1. A liquid refrigerant chamber is provided on one side of an ozonization area via a planar electrode, and a planar liquid electrode is provided on the other side via a planar dielectric, and the planar electrode and the liquid electrode are provided. In between, a high-voltage AC power source is connected and an insulating elongated tube is connected to the inlet and the outlet of the liquid refrigerant chamber, and the liquid refrigerant is supplied and discharged simultaneously from the installation point at the midpoint through these, An ozonizer in which the planar electrode is installed through an electric resistance formed by a refrigerant in the insulating elongated tube. 2. Ozonizer according to claim 1, characterized in that the ozonization zone is connected at its inlet by a gas pipe to a cooler and a gas pump. 3. An ozonizer as claimed in claim 1, characterized in that the liquid electrode has its inlet and liquid outlet connected by a liquid pipe in which a cooler and a liquid pump intervene. 4. The liquid refrigerant chamber has a refrigerant inlet and a refrigerant outlet communicated with each other by an electric resistance formed by a refrigerant and a circulation pipe through which a refrigerant pump intervenes. Ozonizer. 5. The ozonizer according to claim 1, wherein the electric resistance formed by the refrigerant is immersed in the cooling liquid in the cooling tank. 6. The ozonizer according to claim 1, wherein the refrigerant in the insulating thin tube is water. 7. The ozonizer according to claim 1, wherein the refrigerant in the insulating thin tube is oil.