SU1742205A1 - Ozone generator - Google Patents

Abstract

The invention relates to an ozone generator and allows for an increase in productivity and an improvement in the operating conditions of an ozonizer. The inner electrodes are in the form of pressurized flasks formed by plugged metal cylinders, covered with dielectric material and filled with refrigerant. In this case, each flask is provided with a heat exchanger with a developed heat exchange surface, connected by means of a dielectric insert to the cylinder. 3 il.

Description

This invention relates to devices and methods based on the use of electrical discharges for producing ozone.

The purpose of the invention is to increase productivity and improve operating conditions.

Nafig, 1 schematically shows an ozone generator; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The ozone generator contains a hermetic case 1 filled with a coolant (light-boiling liquid), an external electrode 2 installed in it, and having a hermetic metal case. Inside the electrode 2 is installed with a gap inner electrode 3, made in the form of a sealed flask, formed by a muffled metal cylinder, covered with dielectric material 4 and filled with a refrigerant. The electrodes 2,3 may be several, with each inner electrode 3 is equipped with a heat exchanger

5, connected by means of a dielectric insert 6 to the electrode 3.

For better convection of the refrigerant in the heat exchanger 5, tube 7 is installed with a funnel 8. Tube 7 serves to exit the refrigerant vapor, it is connected by means of tube 9 of dielectric material to the bottom of the cylinder; 2, 2, communicated with inlet manifold 12, to which working fluid is fed through pipe 13 to ozonate. The cavity 11 is isolated from the cavity 14 of the heat exchanger 5 by means of the seal 15. The heat exchanger 5 is a corrugated element (FIG. 2), covered by the cylinder 16 of the outer electrode 2 and washed by the refrigerant flowing through the pipe 17.

The cavity 11 in the working zone (where a corona discharge is formed) is narrowed in length to the size of the gap 18. Moreover, the level of the refrigerant, as washing electrode 2, and

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located in the electrode 3, must be located above the narrowed portion of the cavity 11.

The generator is equipped with a refrigerator, which is a section of the housing 1 covered by the casing 19. In the cavity 20 thus formed, a corrugated element 21 is placed, washed by a refrigerant, which is supplied and discharged through pipes 22.23. The nozzle 24 serves to remove the ozone-air mixture. The flasks-cylinders are fixed in the housing 1 by means of the centering sleeves 25, they are also equipped with terminals 26 and hermetic leads 27. Air, oxygen can be used as the working fluid.

The ozone generator works as follows.

A working fluid, for example air, is supplied to a collector 12, a coolant, for example water, is supplied to a cavity 14, a coolant, for example a lightly boiling liquid, is supplied to a cavity 20. After that, a high-voltage electric current is supplied to the electrode 3 through the pressure lead 27, which causes a corona discharge in the working zone — the gap 18 — ionizing the oxygen of the air, as a result of which part of the oxygen is converted into ozone. The thermal energy released during this process evaporates the lightly boiling liquid in the external and internal electrodes 2, 3. The liquid, evaporating, gives off energy, condenses in the heat exchangers 5, and the cavity 20 and flows down in the form of droplets in the lower part of the electrodes 2, 3.

Due to the improvements described, leakage of the refrigerant to the environment is practically prevented, since the housing and electrodes are completely sealed.

Moreover, to replace a failed electrode, it suffices to remove the flask of electrode 3 and replace it with a new, suitable one. In this case, the refrigerant does not leak, the integrity of the flask is not broken,

The design allows to accommodate a large number of electrodes 2, 3 in one housing. Moreover, due to the developed heat exchange surface and efficient cooling, the capacity can be increased without a noticeable increase in size.

In addition, due to the intensity of cooling of the electrodes 2.3 with the help of additional heat exchangers 5, the working area can be significantly reduced. And since the length of the generator must be maintained at a gap of 1.5 mm, in this zone the electrode 3 is covered with dielectric material 4, special requirements are placed on the surfaces of the electrodes, etc., with decreasing this zone, the processability increases, decreases manufacturing costs.

Claims (1)

Claims of the invention Ozone generator comprising a housing filled with a refrigerant, external and internal coaxial electrodes and a refrigerator installed in the housing with a gap relative to each other, characterized in that, in order to improve performance and improve operating conditions, the generator is equipped with a heat exchanger and a dielectric insert, connecting it with an internal electrode, made in the form of a sealed metal cylinder, covered with a dielectric material and filled with a refrigerant. 18 I t Refrigerant A-A Fie.2 nineteen Fi.Z