JPS6048445B2 - ozonizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to the cleaning and cooling of ozonizers, particularly their high frequency inverter power panels.

A conventional ozonizer using silent discharge is constructed as shown in FIG. In the figure, 1 is the raw air intake, 2
is the blower that connects to this intake, 3 and 5 are air piping, 4
is an air cooling device installed between these pipes, 6 is an air dryer that dries the air from this air cooling device, 7 is an ozone generator that generates ozone from the dry air, and 8 is an outlet for ozonized air. Piping, 9 is a high frequency inverter constituting the power supply device of the ozone generator 7, 10 is a high voltage transformer, 1
1 is an electrical connection line, and 12 is a dry air pipe. Next, the operation of the ozonizer configured as described above will be explained.

In the silent discharge ozonizer, a gap of several minutes is provided between the high voltage and low voltage electrodes (not shown) in the ozone generator 7 via a dielectric material, and a silent discharge is generated by the high voltage applied between the two electrodes. The air or oxygen that passes through the gap is ozonated. However, the dew point, temperature, pressure, etc. of the passing gas play a major role in the characteristics of ozone generation. Especially regarding dew point -50℃~-70℃
Maintaining the temperature at a certain level is extremely effective in controlling the characteristics of ozone generation. Therefore, an air dryer 6 as shown in FIG.
is provided before the ozone generator 7. In addition, a blower 2 is generally used as an air supply source, but since the temperature of the air discharged from the blower 2 normally rises to around 100'C, it is cooled back and forth by 5 degrees Celsius in an air cooling device 4, and then air dried. It is supplied to machine 6. On the other hand, this type of ozonizer uses a high frequency inverter 9 as a power supply device for silent discharge.

The conventional high frequency inverter 9 is a self-supporting board as shown in FIG. Figure 2A is a front view, B is a vertical side view, and in the figure, 21 is a cuff, 22 is a handle, 23
24 is a meter, 24 is a display lamp, 25 is an electric parts section that houses electric parts such as thyristors and diodes, 26 is a ventilation fan, 27 is a ventilation inlet, 28 is a ventilation outlet, and 29 is a filtration filter. The circuit of the high frequency inverter 9 is shown in Figure 3.
It is shown. In FIG. 3, 31 is a thyristor on the converter side, 32 is a thyristor on the inverter side, 33 is an electronic circuit device including an ignition circuit, and 34 is a DC reactor, which are mainly incorporated in the electrical component section 25 of FIG. There is. The high-frequency inverter 9 configured as described above is a self-supporting panel shown in FIG. 2, and a ventilation fan 26 is provided inside the panel to constantly cool the inside with outside air.

Conventional ozonizers are configured as described above, so
Although the internal temperature of the high frequency inverter 9 is cooled down to approximately the ambient temperature, it has the following disadvantages.

5 The ozonizer installation location is not a so-called electrical room, but a place where a general crosspiece is installed, and the environment is not necessarily good electrically, and the ambient temperature can rise to 40 to 50 degrees Celsius in the summer. be.

Therefore, even if the inside of the panel is ventilated, it cannot be said to be sufficient. 5 In the above installation environment, the ventilated air cannot be said to be clean, and even if the nitrogen removal filter 29 is installed at the ventilation inlet, the air may contain substances harmful to electrical components depending on the surrounding environment. Also, during rainy weather, humid air flows in.

Therefore, accidents are likely to occur due to insulation deterioration of electronic components. The present invention improves the drawbacks of the conventional devices and cleans and cools the high-frequency inverter by ventilating it with dry air, increasing the capacity of electronic components and preventing accidents caused by insulation deterioration. The purpose is to provide an ozonizer that can

FIG. 4 is a partially omitted system diagram showing an embodiment of the present invention, FIG. 5A is a top view of the high frequency inverter, and FIG. The same reference numerals as in FIG. 2 indicate the same or corresponding parts.

A dry air supply pipe 13 is connected to the high frequency inverter 9 from the outlet of the air drying crosspiece 6, and its tip is directly connected to the part where the dust removal filter 29 shown in FIG. 2 is provided.

3 In the ozonizer configured as described above, while the ozone generator 7 is operating, the dry air supply pipe 1 is connected from the air dryer 6 to the ozone generator 7.
3, the dry air is supplied to the high frequency inverter 9, cools the electrical component section 25 including the thyristor, and is discharged from the ventilation outlet 28 by the ventilation fan 26.

Note that the ventilation method using dry air in the high frequency inverter 9 is not limited to the method of the above embodiment, and can be changed.

Further, although the case where a self-standing panel is used as the high frequency inverter 9 has been exemplified, the present invention may be applied to a parallel panel with other control circuits necessary for operating the ozonizer, and the same effect can be obtained. As described above, according to the present invention, the inside of the panel of the high frequency inverter 9 is ventilated by the dry air from the air dryer 6, so that the following effects can be achieved.

5. Since dry air with a dew point of -50 to -70°C is constantly supplied, the interior of the panel is always dry and there is no risk of accidents due to insulation deterioration.

5 Since the drying air temperature is always maintained at 20℃,
The conventional panel specification standard is ambient temperature 4, which is affected by atmospheric temperature.
The temperature drops from 0°C to 20°C, which increases the capacity of electronic components such as thyristors, contributing to energy and resource conservation.

? Up to the air outlet of the air dryer 6, several stages of filters for removing dust and the like are installed to supply clean air.

? The amount of dry air supplied to the high frequency inverter 9 is small compared to the amount supplied to the ozone generator 7, and the cost increase is also small.

[Brief explanation of the drawing]

Figure 1 is a system diagram showing a conventional ozonizer, Figure 2 A is a front view of a conventional high frequency inverter, B is a vertical side view, and Figure 3 is a diagram showing a conventional ozonizer.
4 is a partially omitted system diagram showing an embodiment of the present invention, FIG. 5A is a front view of the high frequency inverter, and FIG. 5B is a longitudinal side view of the high frequency inverter. In each figure, the same reference numerals indicate the same or equivalent parts, 1 is the raw air inlet, 2 is the blower, 4 is the air cooling device, 6 is the air dryer, 7 is the ozone generator, 9 is the high frequency inverter, 1
0 is a high voltage transformer, 13 is a dry air supply pipe, 25 is an electrical component section, 26 is a ventilation fan, and 28 is a ventilation outlet.

Claims (1)

[Claims] 1. An ozonizer using silent discharge, characterized in that a part of the dry air supplied to the ozone generator is supplied to a high frequency inverter power panel for ventilation. 2. The ozonizer according to claim 1, wherein the high frequency inverter power supply panel is a self-supporting panel. 3. The ozonizer according to claim 1 or 2, wherein the high frequency inverter power supply panel is provided with a ventilation fan.