JP2002305070A - Corona discharge equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to regulate ions and amount of ozone generated from each discharge electrode equal, or conversely to make ions and amount of ozone generated from each of the electric discharge electrodes adjust to give difference, in corona discharge equipment. SOLUTION: The corona discharge equipment consists of a high-voltage generating part and the discharge electrode, and two or more discharge electrodes are connected to one high-voltage generating part, wherein impedance element are provided between each a plurality of the above discharge electrodes and the high-voltage generating part, or between some parts of the discharge electrodes and the high-voltage generating part. Then, adjustment of the amount of discharge of ions or ozone, and discharging of ions having different polar form are made to be possible simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a corona discharge device that generates ozone, positive ions, negative ions, or both positive and negative ions by corona discharge.

[0002]

2. Description of the Related Art Conventionally, a corona discharge device as shown in FIG. 3 has been known. In this device, the applied AC voltage 1 is boosted by a winding transformer 16 to generate an AC high voltage, which is rectified to a negative side by a diode 18 through a DC blocking capacitor 17, and a diode 19 and a capacitor 2
A negative DC high voltage is created by smoothing at 0. By applying this to the discharge electrode 21 and the discharge electrode 22, corona discharge occurs in the vicinity of the discharge electrode. In this case, negative ions are generated, and negative ions are supplied to two places. Diode 18,
By reversing the direction of 19, positive ions can be generated, and by taking the diodes 18, 19 and the capacitor 20, both positive and negative ions can be generated.

[Problems to be solved by the invention]

However, in the case of FIG. 3, the amount of ions generated from each discharge electrode depends on the difference in the shape of the discharge electrode and the length of the wiring from the high-voltage power supply to the discharge electrode. It has not been possible to make adjustments to equalize or, conversely, to have a difference in the amount of generated ions and ozone. In addition, the type of ion could not be changed depending on the supply location.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to arbitrarily supply ions or ozone to a plurality of places or to change the kind of ions to be supplied depending on the places. An object of the present invention is to provide a corona discharge device.

[0005]

According to a first aspect of the present invention, an impedance element is provided between a high voltage generating section and each discharge electrode. Thus, the current flowing through each discharge electrode is limited, and the amount of generation of ions and ozone is adjusted for each discharge electrode.

According to a second aspect of the present invention, a rectifying element is inserted between the high voltage generating section and each discharge electrode. Thereby, the polarity of the current flowing through each discharge electrode is selected, and the polarity of the ions generated for each discharge electrode is selected.

According to the third and fourth aspects, a combination of an impedance element between the high voltage generating section and the discharge electrode and a combination of a rectifying element between the high voltage generating section and the discharge electrode are combined. Thus, the polarity of ions emitted from each discharge electrode is changed, and the amount of ions and ozone released is adjusted.

According to a fifth aspect of the present invention, a wider range of ion and ozone emission is adjusted by combining the means of the first to fourth aspects with a means for inserting a capacitive element between the discharge electrode and GND.

According to a sixth aspect of the present invention, a small and highly safe corona discharge device is realized by using a piezoelectric transformer for the high voltage generating section of the means according to the first to sixth aspects.

In the above-described means for realizing the corona discharge device, it is a matter of course that the discharge amount of ions and ozone can be adjusted over a wider range by combining discharge electrodes having different shapes.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to make the contents of the present invention easier to understand, the present invention will be described in detail with reference to the following embodiments.

[0012]

FIG. 1 shows an embodiment of the present invention. FIG.
Is an example applied to an ion generator. This ion generator raises an applied AC voltage 1 by a piezoelectric transformer 2 to generate an AC high voltage.
8 and 9. A resistor 3 is provided between the output terminal of the piezoelectric transformer 2 and the discharge electrode 7.
Is provided between the output terminal and the discharge electrode 8 with a polarity having the discharge electrode 8 as an anode. A resistor 4 and a diode 6 are provided between the output of the piezoelectric transformer 2 and the discharge electrode 9 with the polarity using the discharge electrode 9 as an anode.

An AC high voltage is applied to the discharge electrode 7 through the resistor 3, and positive ions and negative ions are alternately emitted at the frequency of the AC high voltage. The amount of generation is adjusted by the resistor 3.

An AC high voltage is applied to the discharge electrode 8 through the diode 5. The AC high voltage is rectified by the diode 5, and only a negative high voltage is applied to the discharge electrode 8, and a negative ion is applied from the discharge electrode 8. Only released.

An AC high voltage is applied to the discharge electrode 9 through the resistor 4 and the diode 6. The AC high voltage is rectified by the diode 6, and only the negative high voltage is applied to the discharge electrode 9.
And only negative ions are emitted from the discharge electrode 9. At this time, since the discharge current is limited by the resistor 4, the number of negative ions emitted can be smaller than that of negative ions emitted from the discharge electrode 8.

FIG. 2 is also an example applied to an ion generator. In this ion generator, an applied AC voltage 1 is boosted by a piezoelectric transformer 2 to generate an AC high voltage, which is applied to discharge electrodes 14 and 15. A diode 10 is provided between the output of the piezoelectric transformer 2 and GND with a polarity using GND as a cathode, and the output of the piezoelectric transformer 2 is connected to a discharge electrode 14. A diode 12 is provided between the output of the piezoelectric transformer 2 and the discharge electrode 15 with a polarity using the discharge electrode as an anode.
A capacitor 13 is provided between ND.

A high voltage of a negative pulsating flow is applied to the discharge electrode 14 to release negative ions.

A high DC voltage rectified and smoothed by the diode 12 and the capacitor 13 is applied to the discharge electrode 15.
Negative ions are emitted, but since the applied voltage to the discharge electrode 15 is a smooth DC high voltage, the amount of negative ions emitted is greater than the amount of emission from the discharge electrode 14.

In the embodiments shown in FIGS. 1 and 2, an AC voltage is applied to the piezoelectric transformer. However, the driving form of the piezoelectric transformer is not limited to the AC voltage.

[0020]

As described above, according to the present invention, in a corona discharge device having a plurality of discharge electrodes,
It is possible to provide a small-sized corona discharge device capable of adjusting the amounts of ions and ozone to be released in a wide range and simultaneously releasing ions of different forms.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an ion generator that simultaneously generates both positive and negative ions and negative ions having a difference in emission amount according to an embodiment of the present invention.

FIG. 2 is another configuration diagram illustrating an ion generator that simultaneously generates negative ions having different emission amounts according to an embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional embodiment.

[Explanation of symbols]

1 AC voltage, 2 Piezoelectric transformer 3, 4 Resistance, 5, 6, 10, 11, 12, 18, 19
... Diodes 7, 8, 9, 14, 15, 21, 22 ... Discharge electrodes 13, 17, 20 ... Capacitors 16 ... Winding transformer GND ... 0 V potential

Claims (6)

[Claims] 1. A corona discharge device having a high-voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high-voltage generating section. A corona discharge device characterized in that an impedance element is provided between the discharge electrodes or between a part of the discharge electrodes and the high voltage generating section. 2. A corona discharge device having a high-voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high-voltage generating section. A corona discharge device comprising a rectifier provided between the discharge electrodes or between a part of the discharge electrodes and the high-voltage generator. 3. A corona discharge device having a high-voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high-voltage generating section. A corona discharge device wherein an impedance element is provided between the discharge electrodes and a rectifier element is provided between another part of the discharge electrodes and the high voltage generating section. 4. A corona discharge device having a high-voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high-voltage generating section. A corona discharge device comprising an impedance element and a rectifying element provided between the discharge electrodes or between some of the discharge electrodes and the high-voltage generating section. 5. A corona discharge device having a high-voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high-voltage generating section.
The corona discharge device according to claim 1, wherein a capacitive element is provided between the discharge electrodes and some of the discharge electrodes and GND. 6. A corona discharge device having a high voltage generating section and a discharge electrode, wherein a plurality of discharge electrodes are connected to one high voltage generating section, wherein a piezoelectric transformer is used for the high voltage generating section. The corona discharge device according to claim 1.