JPS5841859B2 - Aeon Fuuhatsu Seiki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ion wind generator that efficiently generates ions and induces an ion wind.

It has been known for some time that ion winds are induced by corona discharge, and the principle behind this generation will be briefly explained below.

Ion wind is a phenomenon in which ions generated in the vicinity of a discharge electrode due to corona discharge move in the direction of electric lines of force due to an electric field, and in the process of this movement, a large number of neutral molecules are thrown off. It is something that is induced by becoming.

Various electrode structures for generating this ion wind have been considered, and examples thereof will be explained using FIG. 1.

In the figure, reference numeral 1 indicates a plurality of discharge electrodes, and reference numeral 2 indicates a mesh-like opposing electrode, which is maintained at a ground potential.

When a DC high voltage is applied between the two by the power supply 3 to generate corona discharge, an ion wind as shown by the arrow is generated based on the above-mentioned principle of ion wind generation.

Here, when considering the factors that determine the strength of the ion wind, the important ones are the number of ions generated per unit time, the electric field strength between the electrodes, and the distance between the electrodes.

From the principle of generation of ion wind, it can be easily inferred that if these values become equal, the ion wind will become stronger.

In conventional electrode structures, generally in order to obtain a strong ion wind, the electric field strength between the electrodes is increased and the distance between the electrodes is increased. However, if the electric field strength between the electrodes is too large, the amount of ions produced will exceed the amount of ions dissipated. As a result, the ion density near the discharge electrode increases and an ion space charge effect occurs, which inhibits the amount of ions produced near the discharge electrode.

Therefore, as the discharge current increases, an ineffective discharge current that does not contribute to ion generation flows, resulting in the generation of a large amount of ozone.In addition, increasing the distance between the electrodes increases the size of the device. These have been a big problem in practice.

FIG. 2 is a characteristic diagram of ion wind speed versus electric field strength between electrodes in a conventional ion wind generator, and the influence of the above-mentioned ion space charge effect can also be seen from this diagram.

That is, as shown by the solid line, the characteristics are bent at a certain point P, and it has been confirmed that the ion space charge effect begins to appear at this point.

If this ion space charge effect can be eliminated, the characteristics shown in FIG. 2 will be improved as shown by the thick dotted line.

The present invention is made based on the above idea, and the ion wind generator according to the present invention will be explained below using the drawings.

FIG. 3 is an explanatory diagram of one embodiment of the ion wind generator according to the present invention, and the parts numbered 1 to 3 in the figure are the same as the parts given the same numbers in FIG. omitted.

Reference numeral 4 denotes a linear ion repelling electrode arranged in front of the discharge electrode 3 to which a high voltage having the same polarity as the discharge electrode 3 is applied by the power source 3.

In this electrode structure, ions generated during corona discharge receive a repulsive force due to the electric field of the ion repelling electrode 4, so that the ions are quickly transferred to the reticular counter electrode 2 than in the conventional example.
Start moving in the direction.

Therefore, since the ion dissipation speed is high, the influence of the space charge effect can be reduced, and the ion wind speed characteristics can be improved.

The characteristics of this improved ion wind are as shown by the dotted line in FIG.
When the value of The problem will also be improved.

As described above, the ion wind generator according to the present invention has a high ion dissipation rate, so it can generate a large amount of ions per unit time and generate ions effectively, and due to the repulsion effect of the ion repulsion electrode, It has the advantage of being able to emit ions almost completely in the same direction.

FIG. 4 shows another embodiment of the ion wind generator according to the present invention, in which reference numeral 5 includes a mesh-like ion repulsion electrode.

Further, FIG. 5 shows an example of an ion wind generator according to the present invention, which has a configuration in which a pulse voltage is applied to the discharge electrode 1 by an AC power source 6, and a direct current is applied to the ion repelling electrode 4 by a DC power source 7.

As described above, the ion wind generator according to the present invention generates ions and induces ion wind more efficiently than conventional examples,
Its industrial potential is great.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of an example of the electrode structure that generates the sulfur wind.
Fig. 2 is a characteristic diagram of ion wind speed versus electric field strength between electrodes in a conventional ion wind generator, Fig. 3 is an explanatory diagram of an embodiment of the ion wind generator according to the present invention, and Figs. FIG. 6 is an explanatory diagram of another embodiment of the ion wind generator according to the invention. 1... Discharge electrode, 2... Counter electrode (mesh counter electrode), 4, 5... Ion repulsion electrode.

Claims (1)

[Claims] 1. A discharge electrode and a counter electrode are arranged to face each other, an ion repelling electrode is provided on the opposite side of the counter electrode with the discharge electrode in the center, and the counter electrode is kept at a ground potential. An ion wind generator that applies high voltage of the same polarity to each.