JPS6050462B2 - ion wind generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ion wind generator in which the ion wind speed is increased simply by changing the wire diameter.

Ion winds induced by corona discharge have been observed in the past, and the principle behind this generation will be briefly explained.

Ion wind is a phenomenon in which ions generated by corona discharge move along the lines of electric force, and in the process of this movement, they repel many neutral molecules, creating a flow of molecules, or wind. It is something. By using this ion wind, it is possible to circulate air without using a fan, and if this is applied to a dust collector, it will have features such as noiseless, small size, and low cost. Become. An example of the electrode structure of this ion wind generator will be explained with reference to FIG. This consists of a linear ionization electrode (ionization line) 1 that generates corona discharge,
It is composed of an ionization line 1 and a parallel plate-shaped counter electrode 2 placed at a constant interval. Note that S is the power supply, and E
is the grounding point. By the way, as shown in FIG. 2, the ion wind speed V has the following relationship with the ion current I of the ionization line. V=-/I (constant) Therefore, the larger the ion current is, the higher the ion wind speed can be obtained.

However, as shown in FIG. 3, as the ion current increases, the amount of ozone, a harmful gas, generated due to corona discharge increases. For this reason, there is a problem in that the ion current is restricted in order to suppress the amount of ozone generated, and therefore the ion wind speed cannot be increased very much, which has the disadvantage of being a major obstacle in practical use of the ion wind generator. The object of the present invention is to eliminate the conventional drawbacks and to obtain an ion wind generator that is noiseless, compact, and inexpensive by simply changing the thickness of the conventional ion beam.

This invention will be explained based on the drawings. This invention is based on the following phenomenon. Conventionally, it has been thought that the amount of ozone generated due to corona discharge is uniquely determined by the ionic current (discharge current) as shown in FIG. 3, regardless of the electrode structure. However, when an ionizing wire is used for the discharge electrode, there is a difference between the amount of ozone generated and the diameter of the ionizing wire.
The inventor has experimentally confirmed that the relationship shown in FIG. 4 exists. That is, the smaller the diameter of the ionized wire, the smaller the amount of ozone generated at the same ion current, and this tendency is particularly remarkable at O, 15 wrmφ or less. From this, O, 15, 7n! It has been found that by using an ionizing wire with a wire diameter of nφ or less, it is possible to obtain a stronger ion wind speed than when using a wire diameter of nφ or less with an allowable amount of ozone generation. Based on the above facts, the ion wind generator according to the present invention uses an ionization wire having a wire diameter of 0.15 mmφ or less. The permissible amount of ozone generated by the ionizing wire with the above wire diameter is higher than previously thought.
It was confirmed that strong ion wind speed could be obtained. for example,
By using an ionizing wire with a wire diameter of 0.05Tn1nφ, an ion wind velocity that is 2 to 3 times higher than when using an ionizing wire with a wire diameter of 0.2mmφ, which has been commonly used in the past, can be obtained. Ta. As described above, the ion wind generator according to the present invention has the advantages of being noiseless, small in size, and low in cost, capable of producing a large ion wind velocity at an allowable amount of ozone generation, and is highly practical. Brief explanation of the drawings Figure 1 shows the electrode structure of a conventional ion wind generator, Figure 2 shows the relationship between ion wind speed and ion current, Figure 3 shows the relationship between ozone generation amount and ion current, and Figure 3 shows the relationship between ozone generation amount and ion current. Figure 4 shows the relationship between the amount of ozone generated and the diameter of the ionized wire.

1: Linear ionization electrode, 2: Parallel plate-shaped counter electrode, S
: Power, E: Ground.

Claims (1)

[Claims] 1. In an ion wind generator configured to induce an ion wind by generating a corona discharge between a linear ionization electrode and its counter electrode, the wire diameter of the linear ionization electrode is set to 0.15 mmφ or less. An ion wind generator that is characterized by: