JPH078836A - Dust collecting electrode plate for electric precipitation element - Google Patents

Abstract

PURPOSE:To make the movement of electric charge easy, to surely form the electric field between a dust collecting electrode plate and an ignition electrode, to prevent the lowering of dust collecting action and to perform the destaticization of dust rapidly by electrically connecting respective conducting layers laminated on both faces of an insulating substrate by a continuity means. CONSTITUTION:In a dust collecting electrode plate E, both faces E212, E213 of an insulating substrate E21 are laminated with conducting layers E22, E23 respectively. In this case, a communicative hole E24 is pierced into the insulating substrate E21, and a communicating face E241 for making both faces E212, E213 of the insulating substrate E21 communicate with each other is formed by the inner peripheral surface of the communicative hole. And the communicative face E241 is laminated with a conducting layer E223 to electrically connect the conducting layers E22, E23 of both sides E212, E213. In this way, the movement of electric charge is made easy to surely form the desired electric field between the dust collecting electrode plate E and an ignition electrode plate, the dust collecting action is lowered and also the destaticizing of collected dust is promptly performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting electrode plate for an electric dust collecting element, and more particularly to a dust collecting electrode plate for an electric dust collecting element formed by laminating a conductive layer on an insulating base material.

[0002]

2. Description of the Related Art Generally, this type of electrostatic precipitator element is
The air to be cleaned comprises an ionization part arranged in the path of the air to be cleaned, and a dust collecting part arranged on the downstream side of the ionization part, and is included in the air to be cleaned by the ionization part. The dust to be charged is previously charged to one polarity (for example, positive polarity), and the charged dust is collected by the dust collecting unit (for example, Japanese Patent Laid-Open No. 4-1872).
52, JP-A-2-33881).

As the above-mentioned dust collecting electrode plate, there are widely used ones in which a conductive coating is applied to both surfaces of an insulating base material such as a resin sheet at the time of manufacture to form a conductive layer, and then cut into a predetermined shape. It's being used. Then, at the time of use, an electrode on the ground side is electrically connected to the conductive layer so that an electric field is generated between the conductive layer and the applied electrode plate.

[0004]

As described above, in the above-mentioned conventional dust collecting electrode plate, at the time of manufacturing, the conductive coating is applied to both surfaces of the insulating base material such as the resin sheet to form the conductive layer, and then the conductive layer is formed. Since it is cut into a predetermined shape, the conductive layer formed on one surface of the insulating substrate and the conductive layer formed on the other surface may not be electrically connected by cutting. In such a case, there is a problem that an electric field is not generated between the conductive layer on the side not electrically connected to the electrode on the ground side and the applied electrode plate facing the conductive layer, and the dust collecting action is deteriorated. Also, even if dust is collected,
There was also a problem that the collected dust could not be sufficiently discharged and the electric field disappeared. In order to eliminate such a problem, it is possible to separately connect the ground side electrode to each of the conductive layer formed on one surface of the insulating base material and the conductive layer formed on the other surface. In that case, the connection structure of the dust collecting electrode plate becomes complicated, which is not preferable.

The present invention has been made in view of the above problems, and provides an electrostatic precipitator element capable of reliably electrically connecting a conductive layer formed on both surfaces of an insulating base material to an electrode on the ground side. It is intended to provide a dust collecting electrode plate.

[0006]

In order to solve the above problems, the dust collecting electrode plate of the electrostatic precipitating element according to the present invention is laminated on both sides of an insulating base material made of an insulating material and an insulating base material. In a dust collecting electrode plate of an electrostatic precipitating element including a conductive layer made of a conductive material, a conductive layer formed on one surface of the insulating member and a conductive layer formed on the other surface are electrically connected. It is characterized in that a conducting means for connection is provided.

The insulating base material has a communication surface that connects one surface and the other surface of the insulating base material, and the conducting means is laminated on the communication surface by the conductive material. It is preferably constituted by a conductive layer that electrically connects the conductive layer on one surface of the insulating base material and the conductive layer on the other surface.

[0008]

According to the above construction, the conductive means electrically connects the conductive layer laminated on one surface of the insulating base material to the conductive layer laminated on the other surface of the insulating base material to easily move the charges. be able to. In particular, when the conducting means is constituted by a conducting layer laminated on the communicating surface of the insulating base material, at the time of manufacturing, the insulating material is preliminarily perforated or cut at a predetermined position, and then the conductive material is applied. By stacking, the conductive layer can be formed at the same time as the conductive layer.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic sectional view of an electrostatic precipitator element according to an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 3 is a perspective view of a dust collecting electrode plate according to another embodiment of the present invention. FIG.

First, referring to FIG. 1, the electrostatic precipitator element 10 in this embodiment is provided with a casing 11. The casing 11 has an air inlet 11a for introducing air to be cleaned therein and an outlet 11b for discharging the introduced air, both of which are communicated by an air passage 11c defined inside. is doing. An ionization unit 12 is formed on the air introduction port 11a side of the air passage 11c. The ionization part 12 is stretched near the air inlet 11a, and an ionization line 12a to which a high voltage of positive polarity (5 KV in this embodiment) is applied, and the ionization line 12a is orthogonal to the air path 11c. And a counter electrode plate 12b on the ground side facing each other.

On the other hand, a dust collecting section E is disposed downstream of the ionization section 12 in the air passage 11c. The application electrode plate E1 and the dust collecting electrode plate E2 in this embodiment are
In the air path 11c, they are alternately stacked with an interval allowing air to flow therethrough. In FIG. 1, 13 is a power supply unit, and the power supply unit 13 supplies a corresponding high DC voltage to the ionization section 12 and the dust collecting section E.

The above-mentioned application electrode plate E1 is composed of an ionization line 12a
It includes a conductive member E11 to which a high voltage of the same polarity (2 KV in this embodiment) is applied, and a covering member E12 that covers the conductive member E11. More specifically, the voltage application electrode plate E1 of the present embodiment is obtained by printing a conductive resin on a sheet material made of, for example, polyethylene terephthalate, and laminating a polyethylene terephthalate sheet material thereon. This is a so-called mold type electrode plate, and the conductive resin constitutes the conductive member E11, and the polyethylene terephthalate sheet material constitutes the covering member E12.

On the other hand, the dust collecting electrode plate E2 is obtained by laminating conductive layers E22 and E23 made of a conductive material such as a conductive resin on both surfaces of an insulating base material E21 made of an insulating material such as polyethylene terephthalate. Is. As shown in FIG. 2, a communication hole E24 is bored in the insulating base material E21 of the dust collecting electrode plate E2 in the present embodiment, and the inner peripheral surface of the communication hole E24 is one of the insulating base materials E21. Face E
Communication surface E241 that connects 212 and the other surface E213
Are configured. Further, the communication surface E241 has a conductive layer E223 formed of a conductive material such as the conductive resin.
Are stacked. The conductive layer E223 is the insulating base material E.
21. Conductive layer E22 on one surface E212 and the other surface E2
13 for electrically connecting to the conductive layer E23. The conductive layer E223 laminated on the communication surface E241 electrically connects the conductive layer E22 formed on the one surface E211 of the insulating base material E21 and the conductive layer E23 formed on the other surface E212. Conducting means is configured.

In forming the dust collecting electrode plate E2 having the above-described structure, first, the insulating material is preliminarily provided with the communication hole E24, and then the conductive resin is applied to both surfaces of the punched insulating material by a conventional method. Coating and drying, insulating material (insulating base material E2
A laminated body in which conductive layers E22 and E23 are laminated on both surfaces of 1) is formed. Then, the laminated body is cut in the same manner as the conventional one to finish the dust collecting electrode plate E2 having a predetermined shape. The conductive layer E223 as the conductive means is a conductive layer E22,
In the step of applying the conductive resin for forming E23, the conductive resin is formed at the same time as the conductive layers E22 and E23 by flowing into the inner peripheral surface of the communication hole E24.

As the above-mentioned conductive material, a material having a predetermined volume resistivity (10 ³ to 10 ⁵ Ω · cm in this embodiment) is most suitable. As such a conductive material, carbon-containing polyurethane or the like is used. Is adopted. This is because no current flows through the dust collecting electrode plate E2 during normal operation, and in the unlikely event that a pinhole occurs in the applying electrode plate E1 and a spark occurs between the dust collecting electrode plate E2 and the dust collecting electrode plate E2. This is because the current can be suppressed, and there is an advantage that the spark can be reduced. Moreover, at the time of manufacturing, the insertion hole E24
This is because it is suitable for laminating the conductive layer E223 on the communication surface E241 defined by.

According to the above structure, the conductive layer E223 as the conductive means allows the one surface E212 of the insulating base material E21.
The conductive layer E22 stacked on the other side and the conductive layer E23 stacked on the other surface E213 are electrically connected to each other, so that the movement of the charges can be facilitated. Therefore, according to this embodiment, a desired electric field can be reliably formed between the applied electrode plate E1 and the dust collection function can be prevented from lowering, and the dust collected can be eliminated. Will be done promptly.

Particularly in this embodiment, since the above-mentioned conducting means is constituted by the conducting layer E223 laminated on the communicating surface E241 of the insulating base material E21, the communicating hole is previously formed at a predetermined position of the insulating material at the time of manufacturing. Drilled E24,
Then, by laminating a conductive material, the conductive layer E22
3 can be formed simultaneously with the conductive layers E22 and E23. As a result, the present embodiment has an advantage that an increase in manufacturing cost can be suppressed. The communication surface E241
In addition to the inner peripheral surface of the communication hole E24 as described above, the inner surface of the cutout continuous with the cut surface of the dust collecting electrode plate E2 formed by cutting may be used.

As the conducting means, the conducting member E shown in FIG. 3 is used.
It is also possible to adopt 25. More specifically, the conductive member E25 is formed of a conductive member such as a metal having corrosion resistance, and extends from both ends of the cylindrical main body portion E251 and the main body portion E251 and is caulked as illustrated. Caulked portions E252, E2 that are expanded into a flange shape
53 and 53 are integrally provided. Then, the dust collecting electrode plate E is previously prepared.
The body portion E25 is inserted into the insertion hole E26 that is punched after the cutting of FIG.
1 is inserted, and the crimped portions E252, E253 at both ends thereof are inserted.
By caulking, it is integrally fixed to the dust collecting electrode plate E2 as shown in the figure.

Even when the structure shown in FIG. 3 is adopted, the conductive layer E2 laminated on one surface E212 of the insulating base material E21.
2 and the conductive layer E23 laminated on the other surface can be electrically connected to each other, so that a desired electric field can be reliably formed between the electrode 2 and the application electrode plate E1, and thus the dust collecting action can be prevented. It is possible to prevent the deterioration, and also to quickly remove the collected dust.

The above-described embodiment is merely a preferred specific example of the present invention. For example, a high voltage of negative polarity is applied to the ionization line and the application electrode plate E1,
It goes without saying that various design changes can be made within the scope not changing the gist of the present invention, such as adopting the dust collecting electrode plate E2 which is electrically connected to the positive polarity electrode. Absent.

[0021]

As described above, according to the dust collecting electrode plate of the electrostatic precipitating element of the present invention, the conductive layer is laminated on one surface of the insulating base material and the conductive layer is laminated on the other surface thereof by the conducting means. The electrically conductive layer is electrically connected to facilitate the transfer of electric charges, so that a desired electric field can be reliably formed between the conductive layer and the applied electrode plate, thereby preventing a decrease in dust collecting action. This has the remarkable effect that the collected dust can be quickly eliminated.

In particular, when the above-mentioned conducting means is constituted by a conducting layer laminated on the communicating surface of the insulating base material, at the time of manufacture, a predetermined position of the insulating material is preliminarily perforated or cut, and the like. Since the conductive layer can be formed at the same time as the conductive layer by laminating the conductive material, there is an advantage that an increase in manufacturing cost can be suppressed.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of an electrostatic precipitator element according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is an enlarged view of a main part of a dust collecting electrode plate according to another embodiment of the present invention.

[Explanation of symbols]

 E2 Dust collecting electrode plate E21 Insulating base material E22 Conductive layer E23 Conductive layer E223 Conductive layer (conductive means) E241 Communication surface E25 Conductive member (conductive means)

Claims (2)

[Claims] 1. An insulating base material (E21) made of an insulating material, and a conductive layer (E22, E23) made of a conductive material laminated on both surfaces (E212, E213) of the insulating base material (E21). In the dust collecting electrode plate of the electric dust collecting element, the conductive layer (E22) formed on one surface (E212) of the insulating base material (E21) and the conductive layer (E23) formed on the other surface (E213) of the insulating base material (E21). ) Is provided with a conducting means (E223, E25) for electrically connecting with the dust collecting electrode plate of the electric dust collecting element. 2. The insulating base material (E21) is the insulating base material (E2).
1) is provided with a communication surface (E241) that communicates one surface (E212) and the other surface (E213), the conduction means is laminated on the communication surface (E241) by the conductive material, Insulating material (E2
1) Conductive layer (E22) on one side (E212) and the other side (E213)
The dust collecting electrode plate of the electrostatic precipitating element according to claim 1, wherein the dust collecting electrode plate is constituted by a conductive layer (E223) electrically connecting to the conductive layer (E23).