JPH0123554Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a dust collection electrode for an air purifier using an electrostatic precipitator method, and more specifically, a disposable collection electrode for an electrostatic precipitator that is made up of a plurality of cylindrical dust collection elements. It concerns dust electrodes.

Conventional air purifiers using the electrostatic precipitator method often consist of discharge wires stretched in parallel and metal dust collection electrodes placed alternately across the discharge wires. Conventional air cleaners have poor dust collection performance due to their structure, and cleaning after collecting dust is very troublesome.

There is a dust collection electrode that can be disposed of together with the collected dust, which is made by combining short fence-like paperboard with aluminum foil in a grid pattern, but this dust collection electrode has low dust collection performance due to its structure. In addition, there was a drawback that uniform dust collection performance could not be maintained because the electrical conductivity between the aluminum foil layers was unstable.

The inventors of the present invention first proposed that a discharge electrode having a structure in which a discharge needle is provided at the tip of a repulsion electrode is provided opposite to the flow direction at the axis of a cylindrical dust collection electrode that constitutes a dust flow path. We proposed an electrostatic precipitator method that exhibits extremely excellent dust collection performance and is easy to clean.

The purpose of the present invention is to eliminate the drawbacks of conventional dust collecting electrodes based on the above-mentioned proposal by the present inventors, to stably maintain excellent dust collection performance, and to provide an inexpensive and disposable electrode for use in electrostatic precipitators. The purpose is to provide a dust electrode.

Next, the details of the present invention will be explained based on the figures.

FIG. 1 is a perspective view of a dust collecting electrode according to an embodiment of the present invention installed in an electrostatic precipitator, FIG. 2 a is a side sectional view thereof, and FIG. 2 b is a plan view thereof.

In these figures, a plurality of circular holes 1 are provided on the entire surface of a holding plate 2 made of paperboard, and a cylindrical base 15 made of a flexible material such as paper or plastic film is shown.
A plurality of cylindrical dust collecting elements 3 formed by providing metal foil layers 6, 6' such as aluminum foil on the inner and outer surfaces of the cylindrical dust collecting element 3 are fitted into each of the circular holes 1 of the holding plate 2, and the dust collecting electrode 9 is formed. It is formed.

Metal foil layers 6, 6' on the inner and outer surfaces of the dust collection element 3
are electrically connected by a metal staple 7 for paper binding.

In the gap 5 between each dust collection element, short conductive strips 4, which are flexible like card paper with aluminum foil pasted on both sides, are placed alternately on both sides by the dust collection element 3. It is inserted so that it is pressed lightly.

One end of the conductive piece 4 is electrically connected to the front and back metal foil layers using a metal staple 7, and then bent and joined to the surface of the holding plate 2 to form a terminal 14.

3a, b, and c are views showing a part of the dust collecting element 3 according to an embodiment of the present invention.
are electrically connected by a conductive paint 16 applied to the edge of the dust collection element 3, and in b, a conductive adhesive is applied to a pore 17 formed through the wall of the dust collection element 3. 16 to electrically connect the front and back sides.

In addition, in FIG. 3c, by bending one end of the dust collection element 3 outward, the metal foil layer 6 on the inner surface is removed.
The front and back surfaces are electrically connected by contacting the metal foil layer 6' on the outer surface.

Although there are various methods for electrically connecting the conductive layers provided on the inner and outer surfaces of the dust collecting element 3 in this way, the present invention is not limited to the method of electrically connecting the inner and outer surfaces of the dust collecting element 3. .

FIG. 4 is a diagram showing how to alternately and lightly press both sides of the conductive piece 4 with the dust collecting elements 3 in the present invention. In a, each of the dust collecting elements 3, 3... Both sides of the flexible conductive piece 4 are pressed alternately;
Although the dust collection elements 3, 3 are used for pressing, both cases are included in the present invention.

To impart conductivity to the inner and outer surfaces of the dust collection element 3, in addition to providing metal foil on the surface of the base 15 as described above, conductivity imparting materials such as metal powder or carbon may be directly mixed into paper or plastic film. good.
Moreover, a vapor-deposited metal film may be used instead of the metal foil layer.

The flexible conductive piece 4 of the present invention may be a metal foil laminated paper, a metal thin piece, the above-mentioned conductive paper, or a conductive plastic film.

Next, the effects of the present invention will be described.

In order to use the dust collection electrode 9 of the present invention, as shown in FIGS. 1 and 2, an electric dust collector having a plurality of discharge electrodes 12 each consisting of a repulsion electrode 11 and a discharge needle 10 provided at the tip of the repulsion electrode 11 is used. Attach the dust collection electrode 9.

Each of the discharge electrodes 12 is positioned on the axis of each of the dust collection elements 3 constituting the dust collection electrode 9, with the discharge end facing the inflow side of the dust-containing air.

When a high voltage is applied by a high voltage power source (not shown) between the terminal 8 connected to the discharge electrode 12 and the terminal 14 formed at one end of the flexible conductive piece 4,
A corona discharge is generated from the tip of the discharge needle 10, and an ion shower is emitted toward the inner wall of the dust collection element 3, and all the dust flowing inside the dust collection element 3 forming the dust flow path 13 is exposed to the ion shower. The dust is charged and collected on the inner wall of the dust collecting element 3.

Since the so-called corona wind generated in conjunction with the ion shower of corona discharge heads toward the inner wall of the dust collection element 3 from the discharge end, the discharge end is replenished with air that has already been purified along the side surface of the discharge electrode 12. Therefore, all the dust is collected by dust collection element 3.
It will not adhere to the inner wall of the battery and contaminate the discharge electrode.

In the electrostatic precipitator using the dust collecting electrode of the present invention, since the discharge ends of the discharge needles 10 are located on the axis of the cylindrical dust collecting element as described above, ion shower within the dust collecting element 3 is extremely low. Moreover, in the dust collecting electrode of the present invention, terminal 1
Since each dust collection element is lightly pressed by the short fence-like flexible conductive piece 4 connected to the ion shower, the ion shower is always stable and even. There is. Therefore, when using the present invention, excellent dust collection performance can be stably maintained.

In addition, the dust collection electrode of the present invention does not require complicated processes such as gluing to maintain the conductivity of each dust collection element during assembly, and is inexpensive because it is made of materials such as paper or plastic film. It can be made disposable.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 a is a side sectional view thereof, and FIG. 2 b is a plan view thereof. FIG. 3 is a partial cross-sectional view of an embodiment of the present invention. FIG. 4 is also a partial explanatory diagram of an embodiment of the present invention. 1... Hole, 2... Holding plate, 3... Dust collection element, 4... Flexible conductive piece, 5... Gap, 6, 6'
...Metal foil layer, 7... Staple, 8... Terminal,
9... Dust collection electrode, 10... Discharge needle, 11... Repulsion electrode, 12... Discharge electrode, 13... Channel, 14...
...terminal, 15...substrate, 16...conductive adhesive or paint, 17...pore, 18...bent portion.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of holes 1 are provided in the holding plate 2, and a plurality of cylindrical dust collection elements 3 made of paper or plastic film and having conductive inner and outer surfaces are attached to the holding plate 2. A short fence-shaped flexible conductive piece 4 is fitted into each of the holes 1 and electrically connects the inner and outer surfaces of the dust collection element 3. A dust collecting electrode for an electric dust collector, characterized in that the electrode is inserted into a gap 5 between dust collecting elements so as to alternately press lightly. (2) The dust collecting element 3 is a dust collecting element having metal foil layers 6, 6' such as aluminum foil on the inner and outer surfaces of a cylindrical base made of paper or plastic film. 6 and 6' are electrically connected to each other, the dust collecting electrode for an electrostatic precipitator according to claim 1 of the registered utility model claim.