JPH0244008A - Power source device for ozonizer - Google Patents

Abstract

PURPOSE:To produce a reverse current by the title inexpensive device with a slight loss of operating power by providing an element wherein a resistor and a coil are arranged in parallel, and a discharge device for a capacitor charging power in series to a DC power supply to superimpose a reverse voltage on the charged DC voltage. CONSTITUTION:In the device for ozonizing O2 molecules by an electron group generated in a silent discharge, the element wherein a resistor 5 and a coil 6 are arranged in parallel is provided in series to the ozonizer 10 to periodically superimpose a brief reverse voltage on the charged DC voltage. The capacitors 3 and 9 are charged by the commercial power source 1 and 7 rectified by diodes 2 and 8. The charging power for the capacitor 3 is automatically impressed on the element through a discharge gap 4 to periodically generated a brief reverse current for the DC voltage. The sum of the voltages is charged between the terminals of the ozonizer 10. Since the resistor 5 and the coil 6 are arranged in parallel, the power loss due to the introduction can be minimized, and the cost of the ozonizer is reduced because an expensive thyristor for high-voltage control is not used.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an ozone generator.

[Conventional technology]

In conventional methods in which oxygen molecules are ozonated by a group of electrons generated by silent discharge, the applied voltage is generally an alternating current voltage.

Although it is clear that by setting this applied voltage to be a DC voltage, the silent discharge electron density related to the ozone yield will be several times higher in the same device, since the cathode is covered with an insulator. There was a problem in using DC voltage as a power source because problems such as a decrease in ozone yield occur due to the accumulation of space charge of cations around the shade.

To prevent the space charge accumulation of the above cations, periodic
Although it is effective to apply a reverse voltage for a short time, an inexpensive and effective method for applying the reverse voltage has not been provided.

[Invention or problem to be solved]

An object of the present invention is to provide a device that is inexpensive and effective in generating a reverse voltage, which is not provided in the prior art, and further minimizes the increase in power loss that accompanies the use of the device.

[Means for resolving the issue]

This invention is characterized in that it does not use a thyristor switch, which is basically expensive and controls a high voltage of about 10 kV, and an ozone generator uses an element in which a resistor and a coil are connected in parallel to a DC power supply. The capacitor charging power is automatically applied to the element through the discharge gap, and a voltage in the opposite direction to the DC voltage is applied periodically and for a short time. It is composed of

[Embodiments of the invention]

Fig. 1 is a diagram of the principle of the present invention, and 1 and 7 are capacitors 3 and 9.
It is rectified and charged by diodes 2 and 8 using a commercial power source for charging. 4 is a discharge gap, 5 is a resistor, 6 is a coil, and 10 is an ozone generator. FIG. 2 shows the charging status of the capacitor 3, where 12 indicates the commercial power supply voltage rectified by a diode, and 13 indicates the capacitor charging voltage.

The charging time constant of this capacitor is calculated from the capacitance of the resistor 11 and capacitor 3 shown in Fig. 1.Charging is completed at the intersection with the commercial voltage, and the discharge voltage of the discharge gap 4 is set at the above intersection. At this time, a voltage is applied between the resistor 5 and the coil 6, and a reverse voltage is periodically generated for a short time with respect to the DC voltage, and this sum is applied between the terminals of the ozone generator. voltage is applied. This conceptual diagram is shown in FIG.

During the period when this reverse voltage is generated, the cation movement speed is 10'α
Since it is very fast at about /S and the distance between the electrodes is less than 1 crn, it is short at less than 1 ms and has a high frequency.
The larger the resistance value of the resistor 5, the smaller the capacitance of the capacitor 3, and therefore the smaller the charging power.

On the other hand, with respect to the operating current of the ozone generator, there is a drawback that the operating power loss increases in proportion to the resistance value of the resistor 5.

As a measure to solve the above-mentioned drawbacks, the pulsed current accompanying the operation of the ozone generator is
Focusing on the fact that the discharge frequency of the pulsed current increases in proportion to the size of the device, and the sum total becomes a low frequency current for the power supply, the operating current of the ozone generator is passed through the coil,
Operating power loss can be reduced to virtually zero. On the other hand, since the reverse voltage has a high frequency, if the inductance of the coil is increased, the discharge current of the capacitor 3 will substantially flow to the resistor 5.
A predetermined reverse voltage is generated. That is, by focusing on the fact that the frequency ratio between the capacitor discharge current and the current as an ozone generator becomes large, and by arranging the resistor 5 and the coil 6 in parallel, the power loss accompanying the introduction of the device of the present invention can be minimized. .

In addition, the DC power source in the present invention is composed of a storage battery (battery) or the commercial power source 7, diode 8, and capacitor 9 shown in FIG. It has nothing to do with the presence or absence of.

If the increase in operating power loss is acceptable, the coil 6 can be omitted, and in order to improve the capacitor discharge current waveform,
The capacitor charging power can be further reduced by adding a parallel element of another resistor and a coil to the discharge circuit, or by providing a distributed circuit of a capacitor and a coil in place of the capacitor 3. , naturally falls within the scope of the present invention.

It is also possible to use a thyristor switch instead of the discharge gap, which naturally falls within the scope of the invention.

〔Effect of the invention〕

Basically, the power loss associated with the introduction of the device of the present invention is avoided by using a thyristor switch that is expensive and requires high voltage control, and a reverse voltage is superimposed on the DC voltage using a small and inexpensive device to achieve the desired effect. can be demonstrated.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the principle of the present invention, FIG. 2 is a diagram showing the charging status of the capacitor 3, and FIG. 3 is an ozone generator 10.
FIG. 2 is a conceptual diagram of a voltage applied between terminals of the device. ■...Commercial power supply, 2...Diode. 3...Capacitor, 4...Discharge gap. 5...Resistor, 6...Coil. 7... Commercial power supply, 8... Diode. 9... Capacitor, 10... Ozone generator. 11...Resistor for charging, 12...Voltage for cloth after rectification. ...Capacitor charging voltage.

Claims (1)

[Claims] In a device that ozonates oxygen molecules using a group of electrons generated during silent discharge, a resistor and a coil are connected to the DC power supply in order to periodically and briefly superimpose a reverse voltage on the applied DC voltage. The device is characterized in that an element connected in parallel with the ozone generator is arranged in series between the ozone generator and the element is equipped with a capacitor charging power discharging device that periodically and briefly generates a reverse voltage. Power supply device for ozone generator.