JPS6048157A - Wind generator - Google Patents

Abstract

PURPOSE:To prevent sparking and to increase the flow rate and pressure of the generated wind by forming the tip surfaces of respective electrodes on the side where the electrodes face ionizing wires into a circular surface shape. CONSTITUTION:Plural electrodes 1 are juxtaposed apart at required spaces to be used as air flow passages. Ionizing wires 2 for generating corona discharge between the same and the electrodes 1 are installed apart at the required distance from the line connecting the edges at the tips of the wires 1. Then the intensity distribution of the electric field between the wires 2 and the tip surfaces of the electrodes 1 is balanced, by which sparking is prevented, the flow rate of ion is increased and the flow rate and pressure of the generated wind are increased.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air blowing device used in an air purification device, an air conditioner, etc., and relates to a device that can blow air without a mechanical power part.

A conventional blower device used in an air purifying device will be explained using FIG. 1 as an example. Reference numeral (1) in the figure indicates an electrode plate for collecting dust, and a plurality of electrode plates are arranged in parallel with a required gap to form an air flow path.

The electrode plate (1) is made of a metal plate such as an aluminum plate or a brass plate, and is formed by cutting it into the required shape and size, so that the cross section of the tip edge is a corner part (1a) as shown in the figure. It becomes. In addition, ionization lines (2) are installed on an extension line from the approximate center of each gap and at an outer position at a required distance r from a line connecting the tip edges of each electrode plate (1). .

A required high voltage is applied from a power source E between the ionization wires (2) and the electrode plates (1), with the ionization wires (2) and the polarity set to (2). When a voltage is applied, a corona discharge is generated between the ionized wire (2) and the electrode plate (1), and this corona discharge attracts a large amount of cations to the electrode plate (1). When moving, the kinetic energy is given to the viscous air to generate a wind (airflow) from the ionization line (2) side toward the gap side. With the generation of this air flow, dust in the air is charged with positive ions, which are collected on the electrode plates (1), thereby performing an air purifying action.

By the way, in order to enhance the wind-raising effect of such a wind blowing device using corona discharge, it is necessary to use ionizing rays (2).
And 1! It is necessary to generate a stable electric discharge by uniformizing the distribution of electric field strength between the opposing tip edges of the electrode plates.

However, in the conventional air blowing device, the electrode plate (1)
The leading edge of the corner (1a) was in contact with the corner (1a), so this corner (1a)
A shortest path is created between 1a) and the ionized wire (2), causing an imbalance in the distribution of electric field strength, and in the shortest path, sparks are generated due to dielectric breakdown, passing through corona discharge, and creating wind. There were problems in that the effectiveness was reduced and the safety of the device was also compromised. When viewed microscopically, the edge of the electrode plate (1) formed by cutting is the second
As shown in the figure, there is a case where the spark is talking at the center (1b), so in such a case, the tendency for sparks to occur is further increased. On the other hand, in order to prevent this spark, the distance r between the ionization wire (2) and the electrode plate (1) is increased, or the applied voltage is lowered to weaken the electric field strength.
In the path portion other than the shortest path portion, the strength of the electric field decreases below the required value, resulting in a problem in that the flow of ions is small and weak, and the wind raising effect is weakened.

Furthermore, in addition to the problem of corona discharge as mentioned above, the flat plate-shaped end face has a large resistance to airflow, and eddy currents are also generated in this part, which increases local resistance and impairs wind blowing performance. There was a problem that it had an adverse effect.

The present invention has been made in view of these conventional problems, and aims to solve the above problems by forming the tip end surface of each electrode into a circumferential shape.

The present invention will be explained below based on the drawings. FIGS. 3 and 4 are diagrams showing a first embodiment of the present invention. In each of the figures from FIG. 3 onward, the same or equivalent members or parts as in FIG.

First, the configuration will be explained. In this invention, electrode rods (3) are used as electrodes. The electrode rod (3) is made of metal such as copper, stainless steel, brass, or iron, or is plated with a precious metal, and has a diameter of about 100 μm to 4 mm. . The required distance r between these electrode rods (3) and the ionization wire (2) is 5 to 20, although it also depends on the applied voltage value.
■It's about. Since the electrode is a round rod, the end surface facing the ionization line (2) is a circumferential surface. (4) (4) is a horizontal bar, which also serves as a mounting support for each electrode bar (3) and a common connection line. used.

Next, the action will be explained.

A high voltage of a required value is applied between the ionization wires (2) and the electrode rods (3), with the ionization wires (2) and the other being set as polarity. At this time, the end surface of the electrode facing the ionization line (2) does not have a corner like in the conventional example, but is a circumferential surface, so there is no path where the electric field becomes particularly strong. The electric field strength distribution is balanced. Therefore, no sparks or the like are generated between the ionized wires (2) and the electrode rods (3), and stable corona discharge occurs.

This corona discharge produces ionized rays (2) due to the same effect as mentioned above.
An air blowing action occurs from the ... side toward each gap of the electrode rod (3).

Incidentally, in this invention, as described above, there is no path where the electric field becomes particularly strong, so when the distance r is the same, the applied voltage value can be increased to about 2O4 compared to the conventional example. , it is possible to generate stable corona discharge even if it is increased in this way. Therefore, since the flow rate of ions increases, the air volume and wind pressure can be further increased.

Furthermore, since the tip end surface is a circumferential surface, it has a shape close to a streamlined shape, which reduces resistance to airflow and does not generate vortices in this portion. Therefore, the shape of the tip surface also acts so as not to reduce the amount of air blown and the wind pressure.

Note that the voltage application mode between the ionization wire (2) and the electrode rod (3) is not limited to the above-mentioned application mode.
The side may be of polarity (■), or an alternating current voltage may be used. At this time, the only difference is the charged polarity of the ions, and the direction of the generated wind is the same as above.

Next, FIG. 5 shows a second embodiment of the present invention.

In this embodiment, a dust collection electrode plate (5) is installed on the back side of each electrode rod (3) to increase the dust collection area, and it has an appropriate dust collection function as well as an air blowing effect. It was forced upon me. As the dust collecting electrode plate (5), one similar to that shown in FIG. 1 can be used, and the corresponding electrode rod (3) and dust collecting electrode plate (5) are electrically connected to each other.

The air raising action is produced in substantially the same manner as in the first embodiment, and together with this, an efficient dust collection action is produced in the same manner as in FIG. 1.

Next, FIG. 6 shows a third embodiment of the present invention.

This embodiment corresponds to the case where the electrode rod (3) and the dust collecting electrode plate (5) in the second embodiment are integrated and used as an electrode plate (6). Also in this embodiment, the tip surface of the electrode plate (6) on the side facing the ionization line (2) is a semi-cylindrical circumferential surface (6a). As the electrode plate (6), an extruded plate such as KT is used.

To explain the effect, the same effect of increasing the air volume and wind pressure as in the first embodiment occurs on the circumferential surface (6a) of the tip surface, and the same effect as in the second embodiment occurs on the plate-shaped portion. A dust effect occurs.

The electrode plate (6) in the third embodiment can be an extrusion molded plate such as KT, so the electrode plate (3) and the dust collecting electrode plate (5) of the second embodiment can be formed separately. Compared to the above, the number of assembly steps can be reduced and costs can be reduced.

As detailed above, according to this invention, the tip surface of each electrode on the side opposite to the ionization line is formed into a circumferential surface, so that the electric field strength distribution between the ionization line and the tip surface of the electrode is are balanced, sparks caused by insulation breakdown hardly occur, and the safety of the equipment is guaranteed. Therefore, even if the discharge voltage value is increased to some extent compared to the conventional one, a stable corona discharge can be generated, and the effect that the ion flow rate is increased and the air volume and wind pressure can be increased can be obtained. Furthermore, the resistance to airflow is reduced at the tip end surface, and no eddy current is generated in this portion, so that the effect of further increasing the wind blowing action can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional air blower, FIG. 2 is a partially omitted enlarged plan view showing an electrode plate in the same air blower, and FIG. 3 is a first embodiment of the air blower according to the present invention. FIG. 4 is a plan view of the same embodiment and also shows the power source; FIG. 5 is a plan view of the second embodiment of the invention; FIG. 6 is a plan view of the third embodiment of the invention. FIG. 2: Ionization wire 3: Electrode rod 5: Dust collecting electrode plate 6: Electrode plate 6a: Circumferential surface E: Power supply Japan Electric Co., Ltd. agent Ashi 1) Nao Mamoru Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A plurality of electrodes are arranged side by side with a required gap to form an air flow path, and a corona discharge is generated between the electrodes at a required distance from a line connecting the tip edges of each electrode. What is claimed is: 1. An air blowing device in which an ionization line for generating ionization is installed, wherein a tip end surface of each of the electrodes is shaped like a circumferential surface.