RU2447016C1 - Ozone generator - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to an ozone generator and can be used in chemical industry and agriculture. The ozone generator includes a compressor (I), a high-voltage unit (II) and an ozone former (III), having a dielectric discharge tube (1) closed on both sides by plugs (2) with nozzles (3) and two electrodes (5, 6). The outer smooth electrode (5) covers the dielectric tube (1) from the outside. The inner electrode (6) is in form of a perforated cylindrical surface with a plug (7) and is inserted into the dielectric tube (1) with a gap (8). Pieces of a bare multicore cable which are twisted in the middle are inserted into each pair of holes in the electrode (6). The ends of the cable on the outer surface of the electrode (6) are spread into separate wires by a locking ring with loop diameter greater than the gap (8). The diameter of holes on the electrode (6) is equal to 1.2-1.3 times the cross-section of the cable.

EFFECT: generator increases efficiency of ozone generation by 23-27%, and reduces the value of high-voltage between electrodes by 1,5…2 kV.

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Description

The invention relates to agriculture, in particular to devices for generating ozone.

A device for producing ozone is known, in which a two-electrode mercury lamp DRL-125 is used as an ozone generator. The formation of ozone occurs due to the influence of ultraviolet rays on the air space around the lamp (Datskevich V. Mercury ozone generator. Fish farming and fishing. - 1970, No. 6).

The disadvantage of this device is the large overall dimensions of the structure, high energy consumption and significant fluctuations in the concentration of ozone in the space surrounding the lamp.

A device for producing ozone is known that contains a thin-walled glass tube, two plugs with glass tubes inserted into them, two metal foil electrodes in the form of strips and a third perforated metal foil electrode in the form of a tube (Migulin V. Aquarium and ozone. Fish farming and fishing. - 1969, No. 3).

The disadvantage of this device is that the concentration of ozone in the air at the outlet of the discharge tube decreases with increasing air supply due to the fact that most of the air passes directly through the tube without touching the surface of the perforations. This system does not withstand the stability requirements of maintaining a given concentration of ozone in an ozone-air mixture.

The closest in technical essence to the claimed one is an ozone generator (prototype - patent for utility model No. 73589 MPK А01К 51/00. Publ. 27.05.2008 - Bull. No. 15), including: a compressor, a high voltage unit and an ozone generator containing a discharge tube - dielectric, closed on both sides with plugs with nozzles; two electrodes, one of which (smooth) covers the outside of the dielectric tube, and the other (internal), in the form of a perforated cylindrical surface with a plug, is inserted into the dielectric tube with a gap.

The disadvantage of this device is the low efficiency of ozone formation in the ozone generator. This is due to the fact that the protrusions of the perforated holes act in a small (limited) volume of the interelectrode space and have different lengths, so their edges are differently removed from the surface of the dielectric tube and the outer electrode, which does not contribute to the occurrence of a corona discharge at all sharp ends and reduces the formation of ozone in the ozone generator.

The aim of the invention is to increase the efficiency of ozone formation in the ozone generator.

This goal is achieved by the fact that in each pair of holes of the electrode with a perforated cylindrical surface inside are inserted twisted in the middle segments of the bare stranded wire, the ends of which on the outer surface of the electrode are separated into separate wires by a whisk with a loop diameter larger than the gap between the internal electrode and the dielectric, moreover, the diameter of the holes of the electrode with a perforated cylindrical surface is 1.2 ... 1.3 from the cross section of the stranded wire.

Due to the fact that inside each pair of holes of the electrode with a perforated cylindrical surface inside are inserted twisted in the middle segments of the bare stranded wire, thin wires have reliable electrical contact between themselves and the internal electrode and do not break up into separate conductors during operation.

Due to the fact that the stranded wire is separated into separate wires on the outer surface of the electrode, the rim covers a larger volume of the interelectrode space for the formation of ozone, and because the diameter of the rim of the rim is larger than the gap between the inner electrode and the dielectric tube, the ends of the wires are pressed tightly to the inner surface of the dielectric tube, being closer to the outer electrode and creating better conditions for the occurrence of corona discharge, and hence more intense mu ozone formation on their sharp edges.

When the diameter of the holes of the electrode with a perforated cylindrical surface is within 1.2 ... 1.3 of the cross-section of the stranded wire: on the one hand, additional resistance to the movement of the air flow is not created and the performance of the compressor is not reduced, and on the other, the necessary pressure is maintained inside the cylinder, providing uniform air passage through all holes of the electrode with a perforated cylindrical surface. If the hole is less than the specified ratio with the cross-section of the stranded wire, then due to the additional resistance, the flow rate of the finished ozone-air mixture will decrease. If the hole is larger than the specified ratio with the cross-section of the stranded wire, then the air flow through the holes of the cylindrical surface will increase, which will reduce the duration of contact of the air with the sharp edges of the wires of the inner electrode and reduce the concentration of ozone at the outlet of the ozone generator.

All this increases the efficiency of ozone formation in the ozone generator.

According to the author’s information, there are new signs of an ozone generator in an ozone generator device, in which segments of a bare stranded wire are inserted inside each pair of holes of an electrode with a perforated cylindrical surface, the ends of which on the outer surface of the electrode are spaced apart by separate wires with a rim with a large diameter than the gap between the inner electrode and the dielectric, and the diameter of the holes of the electrode with a perforated cylindrical surface amounts to 1.2 ... 1.3 from the cross-section of a stranded wire, providing a new positive effect - increasing the efficiency of ozone formation is not known and does not follow explicitly from the existing level of science and technology. This allows us to conclude that the technical solution meets the criteria of "novelty" and "inventive step".

Figure 1 shows a General view and diagram of an ozone generator, where I is a compressor; II - high voltage unit; III - an ozone generator, which consists of a discharge dielectric tube 1, plugs 2 with nozzles 3 and 4, a smooth (outer) electrode 5, covering the dielectric tube 1 from above, an electrode 6 (inner) with a perforated cylindrical surface with a plug 7 inserted with a gap of 8 into the dielectric tube 1.

Figure 2 shows the working section of the section of the ozone generator, consisting of a discharge tube-dielectric 1, a smooth (outer) electrode 5, electrode 6 (inner) with a perforated cylindrical surface and holes 9 connecting the inner cavity of the perforated electrode 6 with a gap of 8, bare stranded wire 10, individual wires 11, which form a rim 12 inside the gap 8 between the electrode 6 with a perforated cylindrical surface and the dielectric tube 1.

The device operates as follows.

The compressor I through the pipe 3 of the ozone-forming agent III delivers air inside the electrode 6 with a perforated cylindrical surface (figure 1). Plugs 2 and 7 prevent the free flow of air from the cylinder into the atmosphere. With increasing pressure inside the electrode 6, the air through the holes 9 (figure 2), bypassing the corolla 12, enters the working gap 8.

The high voltage unit II creates a high-voltage electric field with a voltage of 8 ... 9 kV between the electrodes 5 and 6, the ozone generator III (figure 1). A corona discharge arising on the sharp edges of the wires 11, the ends of which due to the spring effect are as close as possible to the inner surface of the dielectric tube 1, generates ozone from atmospheric oxygen. Next, the ozone-air mixture in the gap 8 moves to the pipe 4, where it can be used for its intended purpose.

Due to the fact that in each pair of holes 9 of the electrode 6 with a perforated cylindrical surface from the inside, segments of the bare stranded wire 10 are twisted in the middle (FIG. 2), thin wires 11 have reliable electrical contact both between themselves and the electrode. Twisted in the middle, they do not break up into separate conductors, and due to the fact that on the outer surface of the electrode 6 the stranded wire 10 is divided into separate wires 11 in the form of a corolla 12, the wires do not fall out of the holes 9 during operation. In addition, the corolla 12 allows you to cover a larger volume of interelectrode space in the gap 8 for the formation of ozone.

An electric discharge occurs between the outer and inner electrodes, with the maximum field strength occurring inside the dielectric tube near the sharp edges (ends) of the wires 11. Since the diameter of the corolla circuit is larger than the gap between the inner electrode and the dielectric, the ends of the wires 11 during installation the electrodes 6 are bent into the dielectric tube 1 and due to elastic deformation (a spring effect is created) are tightly pressed to the inner surface of the dielectric tube, located as close as possible the external electrode 5. This creates the best conditions for the occurrence of corona discharge on all the wires, and thus contributes to a more intensive formation of ozone on their sharp edges.

The diameter of the holes 9 in the electrode 6 with a perforated cylindrical surface should be 1.2 ... 1.3 of the cross-sectional area of the bare stranded wire 10. In this case, the air supply system does not create noticeable additional resistance to the movement of its flow, which does not reduce the performance of the compressor, but inside the electrode 6 with a perforated cylindrical surface, the necessary pressure is maintained, which facilitates the uniform passage of air through all its openings, which does not reduce the concentration of ozone in the mixture.

The proposed technical solution as a whole increases the efficiency of the ozone generator by 23 ... 27% and allows, in comparison with the prototype, to reduce the value of the high voltage voltage between the electrodes by 1.5 ... 2 kV.

Claims (1)

An ozone generator, including: a compressor, a high voltage unit and an ozone generator containing a discharge dielectric tube, closed on both sides by plugs with nozzles, two electrodes, one of which covers the dielectric tube from the outside, and the other is inserted inside the perforated cylindrical surface with a plug dielectric tubes with a gap, characterized in that in each pair of holes of the electrode with a perforated cylindrical surface inside are inserted twisted in the middle sections of bare stranded wire yes, the ends of which on the outer surface of the electrode are spaced apart into separate wires by a rim with a loop diameter larger than the gap between the inner electrode and the dielectric tube, the diameter of the holes of the electrode with a perforated cylindrical surface being 1.2 ... 1.3 from the cross-section of a multicore wires.

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