JPS62123005A - Method for generating ozone - Google Patents

Abstract

PURPOSE:To contrive stabilization of electrical source voltage and to prevent release of ozone to atmosphere simultaneously, by partially introducing raw material air to a pulse high-voltage electrical source device of closed structure and returning ozone-containing air discharged from it to a raw material inlet side of ozonizer. CONSTITUTION:Dried raw air fed to a device by a blower 19 is sent through an air duct 11 to an ozonizer 7 in operation of the ozonizer 7. On the other hand, the raw material air is partially fed through a branched dust 25 to a pulse high-voltage electrical source device 21 and a closed container 24 is filled with the air. Each spark gap 4 produces a short-circuit phenomenon under a fixed voltage breakdown condition and an approximately fixed amount of electric charge is accumulated in each condenser 5 by the short-circuit electric current at about constant time intervals. Stable pulse high voltage is fed to the ozonizer 7 by the accumulatted electric charge. Ozone containing air generated in the electrical source device 21 is returned to an inlet side of the ozonizer, so it is not released to atmosphere and there is no fear of environmental pollution.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ozone generation method capable of stabilizing power supply voltage and preventing ozone from being released into the atmosphere.

[Prior Art] A conventional pulse high voltage power supply device used as a power source for a pulse discharge ozone generator usually generates a DC high voltage through a transformer 1 and a rectifier 2 as shown in FIG. A short-circuit current is applied to the spark gap 4 of the power supply H3, and the short-circuit current generated between the gaps 4 is accumulated in the capacitor 5, and the accumulated electric charge is transferred between discharge electrodes (not shown) provided in the ozone generator 1 via the power supply cable 6. Ozone 9 was generated from the dry air supplied to the ozone generator 7 through the air dryer R8. In addition, 10 in the figure
1 is a blower, and 11 is a blowing air duct.

[Problems to be Solved by the Invention] However, according to the above-described power supply device, the dielectric breakdown conditions (voltage and phase) in the spark gap 4 are generally controlled by the atmospheric humidity. There was a problem that the output voltage became unstable due to fluctuations in atmospheric humidity. In addition, some ozone generated by discharge during a short circuit is released into the atmosphere, which is undesirable in terms of health and hygiene.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned problems, and the gist thereof is to provide a blower, an air dryer, a pulse high voltage power supply device, and a pulse discharge type ozone generator. In the ozone generation method in which ozone is generated using a This is to return the emitted ozone-containing air to the ozone generator raw air inlet side.

[Function] Since the atmosphere inside the power supply device is dry, the dielectric breakdown conditions between the spark gaps are always constant and the output voltage is stable. Further, since the ozone generated during the short circuit is supplied to the ozone generator as part of the raw air, it is recovered as part of the generated ozone, and there is no risk of causing environmental pollution.

[Example 1] Hereinafter, an example of an apparatus for carrying out the method of the present invention will be described with reference to the drawings. It should be noted that the same reference numerals in the drawings are given to the same contents as those in the prior art.

The power supply device 21 is covered with a closed container 24 having an inlet port 22 and an outlet port 22 , and a branch duct 25 branched from the air duct 11 is connected to the inlet port 22 , and
Branch ducts 26 connected to the outlet openings 26 are connected to the air ducts 11 on the ozone generating side. The configuration of the spark gap 4, capacitor 5, etc. is the same as the conventional one, but each spark gap 4 has conductors 27 formed in the shape of a sphere, hemisphere, or rod facing each other at a small interval (for example, 0.5 to 3 mm). It is.

Next, the operation of this device will be explained. During operation of the ozone generation equipment, the raw air supplied into the equipment by the blower Ifs10 is supplied to the ozone generator 1 through the air duct 11, while a part of the raw air is supplied to the power supply device 21 through the branch duct 25. The liquid is supplied and filled into the closed container 24. Each spark gap 4 generates a short-circuit phenomenon under a certain voltage breakdown condition, and this short-circuit current causes a substantially constant peak of charge to accumulate in each capacitor 5 at substantially constant time intervals. A stable pulsed high voltage is supplied to the ozone generator 1 by this accumulated charge.

It should be noted that the present invention is not limited to the above-described embodiments, and includes the possibility of supplying a portion of the raw air that has passed through the air dryer to multiple systems of power supplies and ozone generators. Of course, various changes can be made without departing from the gist of the invention.

[Effects of the Invention] As described above, the present invention exhibits the following excellent effects.

(D) Since the spark gap of the power supply device is always in a dry air atmosphere, the dielectric breakdown conditions are maintained constant and a stable pulsed high voltage can be supplied to the ozone generator.

C) Air containing ozone generated within the power supply device is returned to the ozone generator inlet side, so it is not released into the atmosphere and there is no risk of harming the living environment.

(To) For the same reason as in item 0), effective recovery of ozone can be achieved.

[Brief explanation of drawings]

Figures 1 and 2 show an example of ozone generation equipment for implementing this method. Figure 1 is a system diagram showing an overview of the equipment, and Figure 2 is a pulse high voltage power supply shown in Figure 1. An explanatory diagram of the apparatus, FIG. 3 is an explanatory diagram of a conventional ozone generation equipment. In the figure, 4 is a spark gap, 7 is an ozone generator, 8 is an air dryer, 11 is an air duct, 21 is a power supply device, 24
25.26 indicates a closed container, and 25.26 indicates a branch duct. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1) In an ozone generation method that uses a blower, an air dryer, a pulse high voltage power supply, and a pulse discharge ozone generator to generate ozone, a portion of the dry raw air sent from the air dryer to the ozone generator is A method for generating ozone, which comprises taking out the air and introducing it into a pulsed high voltage power supply device having a sealed structure, and returning the ozone-containing air discharged from the electrode device to the raw material air inlet side of the ozone generator.