JP2000325830A - Discharge electrode for air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an electrode lightweight and to reduce running cost by forming a counter electrode from a conductive sheet material of carbon fiber, metallic fiber, or the like, so that respective needle electroded are arranged each in nearly center part of plural cylindrical and grating counter electrodes. SOLUTION: An air cleaner 1 mounted on the ceiling 2, or the like, of a house is constituted so that an air intake hole 4 is opened at the nearly center part of the bottom of an exterior case 3, and a dust collecting unit 9 of an electric dust collector type is incorporated in the upper part of the air intake hole 4. The dust collecting unit 9 is structured by housing a combined one formed by inserting and mounting plural cylindrical and grating counter electrodes 13 among plural needle electrodes 12 arranged in a matrix state in a frame 14. In such a case, the counter electrode 13 is formed, for example, from the conductive sheet material of carbon fiber or metallic fiber and the surface of the sheet material is covered with a resin film or a paper sheet to prevent the stopping of the corona discharge among the needle electrodes 12 due to the scuffing of fiber from the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge electrode for an air purifier for removing smoke and odor of cigarettes generated in offices and restaurants.

[0002]

2. Description of the Related Art As one of air purifiers for removing smoke and odor of cigarettes generated in offices, restaurants, amusement facilities, etc., an apparatus using an electric dust collector is disclosed in, for example, Japanese Utility Model Registration No. 3033859. As shown, this configuration is characterized in that the number of discharges per unit area is large and the purification efficiency is excellent.

On the other hand, in the above configuration, FIGS.
As shown in FIG. 5, an electrode plate made of stainless steel or the like is meshed and combined in a cylindrical and grid shape, and when the surface of the electrode plate is contaminated by the cleaning operation, the electrode is cleaned by a device such as an air purifier. Since the plate is removed and cleaned with a special detergent, the total weight of the electrode plate is relatively heavy, and when the equipment is mounted on the ceiling of a room, for example, it is used for attaching and detaching work at the time of cleaning etc. There is a problem that labor is required.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to reduce the weight of an electrode and the running cost.

[0005]

According to the present invention, there is provided a multi-layer structure in which needle electrodes are arranged at substantially the center of a large number of cylindrical and grid-like counter electrodes, wherein the counter electrodes are formed of conductive carbon fibers or metal fibers. It is formed of a sheet material or a sheet material made of mixed paper mixed with conductive carbon fibers or metal fibers.

In the present invention, the surface of the sheet material is covered with a resin film, latex, paper or the like.

Further, according to the present invention, a needle electrode is disposed at substantially the center of a large number of cylindrical and grid-like counter electrodes, and the counter electrodes are formed of a conductive sheet material obtained by mixing activated carbon with nonwoven fabric or paper. It was done.

According to the present invention, an oil mist adsorbing material such as an electrostatic filter is adhered to the surface of the sheet material at a portion downstream of the portion facing the needle electrode.

Further, in the present invention, a deodorant is attached to the surface of the sheet material at a portion downstream of the portion facing the needle electrode.

Further, according to the present invention, a needle electrode is provided at a substantially central portion of a large number of cylindrical and grid-like counter electrodes, and the counter electrodes are formed by oil mist on the surface of a thin plate made of a conductive metal such as aluminum. It is formed of a sheet material on which a functional material such as an adsorbent or a deodorant is adhered, or is formed by embossing the surface of a thin plate.

Further, according to the present invention, a needle electrode is disposed at a substantially central portion of a large number of cylindrical and grid-like counter electrodes, wherein the counter electrodes are formed of a thin plate made of a conductive metal such as aluminum. The surface of the thin plate is formed with irregularities by embossing.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described first with reference to FIG. 1. Reference numeral 1 denotes an air purifier mounted on, for example, a ceiling 2 of a house. An intake hole 4 is opened, and a mesh-shaped cover 5 is detachably mounted on a sheet metal in the intake hole, and outlets 6, 6 are opened near the bottom surface on both left and right side surfaces. Are fitted with wire meshes 7 and 7 for grilling, and deodorizing filters 8 and 8 made of activated carbon fiber or the like are fitted inside the wire meshes.

In addition, a dust collecting unit 9 of an electric dust collecting system is built in the upper part of the intake hole 4 in the center of the outer case 3,
Ventilation passages (10, 10) are formed between the dust collection unit and the outer case (3) to communicate the air intake holes (4) and the air outlets (6, 6). The flow-type blower fans 11, 11 are mounted, and by operating the blower fans, room air or the like is supplied to the above-described intake holes 4.
After sucking and passing through the dust collecting unit 9, the ventilation path 1
Deodorizing filters 8, 8 from outlets 6, 6 through 0, 10
It is configured to circulate in the room through the.

On the other hand, the dust collecting unit 9 has a large number of needle electrodes 12 arranged in a matrix as shown in FIG.
.. A cylindrical and grid-shaped counter electrode 13 is inserted and mounted between them, and combined, and these electrodes are housed in a frame-shaped frame 14.

The needle electrodes 12 are formed, for example, by forming a stainless steel plate into a strip shape, and a discharge portion 16 integrally formed with a plurality of discharge electrodes 15 at the tip thereof, and an aluminum material for supporting the discharge portion. , Etc., formed of the same.

As shown in FIG. 3, the counter electrodes 13 are made of, for example, a sheet material 18 made of conductive carbon fiber or metal fiber, and these sheet materials are made of fibers from the surface. In order to prevent the corona discharge between the needle electrodes 12... Due to fuzzing, the surfaces thereof are covered with a resin film 19 of plastic or the like, latex, paper or the like.

FIG. 4 shows another embodiment of the present invention.
The counter electrodes 13 are formed of a sheet material 18 in which granular activated carbon 21 or fibrous activated carbon 22 is mixed into a nonwoven fabric 20 such as polypropylene or polyester, and deodorization is performed by the activated carbons 21 and 22. I can do it.

The sheet material 18 is made of the nonwoven fabric 20 described above.
Is formed, fluffing of the surface may be prevented by hot pressing. In this case, the processing cost can be reduced.

FIG. 5 shows another embodiment of the present invention.
When circulating room air in the direction indicated by the arrow in the figure,
An oil mist adsorbing material 2 such as an electrostatic filter or a lipophilic nonwoven fabric is provided on the surface of the sheet material 18 forming the counter electrode 13 on the downstream side of the surface facing the needle electrode 12.
3, or by adhering a deodorant such as an activated carbon sheet to collect dust and remove oil mist by corona discharge, or collect dust and deodorize at the same time.

Thus, after the impurities contained in the air, such as room air, are collected by corona discharge between the needle electrodes 12 and the counter electrodes 13 and the like, the oil mist adsorbent 23 is used to collect the dust in the air. It can remove oil mist contained in.

The activated carbons 21 and 22 shown in FIG.
By adhering the oil mist adsorbing material 23 to the surface of the sheet material mixed with, dust collection, deodorization, and removal of the oil mist can be performed at the same time.

In the above embodiment, the sheet material 18 is used.
The oil mist adsorbing material 23 is stuck on the entire surface of the sheet. As a sheet material, for example, a laminated sheet in which a conductive metal foil such as aluminum is coated on a paper surface, or a kraft paper surface of Sakata Inx Co., Ltd. A sheet material or the like coated with a conductive paint such as an antistatic ink for corrugated cardboard may be used, and the oil mist adsorbing material 23 is provided only on the downstream surface of the discharge electrode 15 of the sheet material 18. You may comprise so that it may stick.

FIG. 6 shows still another embodiment of the present invention, in which the above-mentioned counter electrodes 13 are attached to the surface of a thin plate 24 made of a conductive metal such as stainless steel or aluminum by an oil mist adsorbent or a deodorant. And the like, and are formed of a sheet material to which functional materials 25, 25 are attached.

With these constructions, the weight of the counter electrode can be reduced by using the metal thin plate 24 as the core material.
The functional material 25 enables removal and deodorization of oil mist contained in the air.

FIG. 7 shows another embodiment of the present invention.
Concavities and convexities are formed on the surface of the metal thin plate 24 constituting the counter electrodes 13 by embossing using a metal roller or the like.

As a result, the area of the dust collecting electrode of the counter electrode 13 increases, and the needle electrode 12 and the counter electrode 13
.. More charged particles generated by corona discharge between them adhere to the counter electrode 13..., And the dust collection efficiency can be improved.

In the above embodiment, the functional materials 25, 25 such as an oil mist adsorbent and a deodorant are adhered to the surface of the thin plate 24. However, only the irregularities are formed on the surface of the thin plate 24 by embossing. Even with the configuration, the dust collection efficiency can be improved by increasing the dust collection electrode area while reducing the weight of the electrode.

During operation of the air purifier 1, the blower fans 11, 11 are rotated, and a predetermined high voltage is applied between the needle electrodes 12 and the counter electrodes 13 of the dust collection unit 9. Thus, after the room air is sucked from the intake hole 4 through the cover 5, the room air passes between the needle electrodes 12 and the counter electrodes 13 of the dust collection unit 9 and is purified.
Then, after passing through the ventilation passage 10, the air is discharged again into the room from the outlets 6, 6 via the deodorizing filters 8, 8.

Then, the counter electrode 13 is formed by the above-described cleaning operation.
If oil or the like adheres to the surface of the dust collecting unit 9 and becomes dirty, the dust collecting unit 9 can be lightened by removing the counter electrode 13 from the dust collecting unit 9 and installing a new counter electrode. In addition to this, it is not necessary to clean the counter electrode with a special detergent as in the prior art, so that the running cost can be greatly reduced.

[0030]

According to the constitution of the present invention, the counter electrode is formed of a sheet material of conductive carbon fiber or metal fiber or a sheet material of mixed paper mixed with conductive carbon fiber or metal fiber. Unlike the prior art, the counter electrode does not need to be washed with a special detergent and used repeatedly, so that the running cost can be reduced by so-called disposable, and the counter electrode can be significantly reduced in weight.

Further, according to the structure of the present invention, the surface of the sheet material is coated with a resin film, latex, paper, or the like, so that it is possible to prevent the discharge stop due to the fluffing of the fibers without affecting the corona discharge. It is.

Further, according to the structure of the present invention, since the counter electrode is formed of a conductive sheet material in which activated carbon is mixed with nonwoven fabric or paper, dust collection by corona discharge and deodorization by activated carbon can be performed simultaneously. Things.

Further, according to the structure of the present invention, since the oil mist adsorbing material is attached to the surface of the sheet material on the downstream side of the discharge portion, dust collection by corona discharge and removal of oil mist by the adsorbing material can be performed simultaneously. In addition, the replacement of the adsorbent can be performed at the same time by replacing the counter electrode, thereby improving usability.

Further, according to the structure of the present invention, by attaching a deodorant to the downstream surface of the discharge portion of the sheet material, dust collection by corona discharge and deodorization by the deodorant can be performed at the same time. The replacement of the electrode and the replacement of the deodorant can be performed at the same time, and the usability is improved.

According to the structure of the present invention, the counter electrode is formed of a sheet material in which a functional material is adhered to the surface of a thin metal plate made of aluminum or the like. Can be removed and deodorized.

According to the structure of the present invention, irregularities are formed by embossing on the surface of the metal thin plate constituting the counter electrode, so that the dust collecting electrode area can be increased and the dust collecting efficiency can be improved. It is.

[Brief description of the drawings]

FIG. 1 is a front vertical sectional view showing an embodiment of an air purifier using a discharge electrode according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a discharge electrode according to the present invention.

FIG. 3 shows an embodiment of a main part of the present invention.
(A) is a side longitudinal sectional view, and (B) is an enlarged view of a portion A in (A).

FIG. 4 is a side longitudinal sectional view showing another embodiment of the present invention, wherein (a) shows a case where granular activated carbon is used, and (b) shows a case where fibrous activated carbon is used.

FIG. 5 is a side longitudinal sectional view showing another embodiment of the present invention.

FIG. 6 is a side longitudinal sectional view showing another embodiment of the present invention.

FIG. 7 is a side longitudinal sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 12 Needle electrode 13 Counter electrode 18 Sheet material 21 Activated carbon 22 Activated carbon 23 Adsorbent 24 Thin plate 25 Functional material

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[Procedure amendment]

[Submission date] November 29, 1999 (1999.11.
29)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 4

[Correction method] Change

[Correction contents]

FIG. 4

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B03C 3/60 B03C 3/60 (72) Inventor Takashi Moriwaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Sanyo Tottori Inside Electric Co., Ltd. (72) Inventor Noriaki Hirano 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Takashi Matsuda 3-201, Minamiyoshikata, Tottori City, Tottori Prefecture Sanyo Electric Co., Ltd. F term (reference) 4D054 AA09 AA11 BA01 BB06 BC14 BC21 BC22 BC24 EA27

Claims (8)

[Claims] A needle electrode is provided at a substantially central portion of a large number of cylindrical and grid-like counter electrodes, wherein the counter electrode is formed of a conductive carbon fiber or metal fiber sheet material or a conductive material. A discharge electrode for an air purifier, wherein the discharge electrode is formed of a sheet material made of a mixed paper mixed with carbon fibers and metal fibers. 2. The discharge electrode for an air purifier according to claim 1, wherein the surface of the sheet material is coated with a resin film, latex, paper, or the like. 3. A device in which a needle electrode is disposed substantially at the center of a large number of cylindrical and grid-like counter electrodes, wherein the counter electrodes are formed of a conductive sheet material obtained by mixing activated carbon with nonwoven fabric or paper. Discharge electrode for air purifier characterized by the following. 4. The sheet material according to claim 1, wherein an oil mist adsorbent such as an electrostatic filter is attached to a surface of a portion of the sheet material downstream of the portion facing the needle electrode. Electrodes for air purifiers. 5. The discharge electrode for an air purifier according to claim 1, wherein a deodorant is attached to a surface of a portion of the sheet material downstream of the portion facing the needle electrode. 6. A device in which a needle electrode is disposed substantially at the center of a large number of cylindrical and grid-like counter electrodes, wherein the counter electrode is provided on a surface of a thin plate made of a conductive metal such as aluminum. A discharge electrode for an air purifier characterized by being formed of a sheet material on which a functional material such as a deodorant or a deodorant is adhered. 7. The discharge electrode for an air purifier according to claim 6, wherein irregularities are formed by embossing on the surface of the thin plate on which the counter electrode is formed. 8. A device having a plurality of cylindrical and grid-like counter electrodes each having a needle electrode substantially at the center thereof, wherein the counter electrode is formed of a thin plate made of a conductive metal such as aluminum. A discharge electrode for an air purifier, characterized in that irregularities are formed on the surface of the surface by embossing.