JP3421602B2 - Discharge electrode for air purifier - Google Patents

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 cleaner that removes cigarette smoke and offensive odors generated in offices, restaurants and the like.

[0002]

2. Description of the Related Art As one of the air cleaners for removing cigarette smoke and offensive odors generated in offices, restaurants, amusement facilities, etc., one using an electrostatic precipitator is disclosed in, for example, Registered Utility Model No. 3033859. 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-mentioned structure, FIGS.
As shown in Fig. 5, electrode plates made of stainless steel or the like are meshed together in a cylindrical and lattice shape, and when the surface of the electrode plates is contaminated by the cleaning operation, the electrode is removed from equipment such as an air cleaner. Since the plate is removed and washed with a special detergent, the total weight of the electrode plate is relatively heavy, and if the device is mounted on, for example, the ceiling in the room, it can be attached / detached during cleaning. There is a problem that it requires labor.

[0004]

The object of the present invention is to reduce the weight of the electrode and the running cost.

[0005]

DISCLOSURE OF THE INVENTION The present invention comprises a large number of combinations of a needle electrode and a cylindrical counter electrode arranged in the vicinity of and surrounding the needle electrode to form a grid-like structure as a whole. In the above, a plurality of discharge electrodes are formed at the air flow upstream side end of the needle electrode, and the counter electrode is a corrugated plate obtained by bending an electrode plate having a conductive thin film formed on the surface of paper into a square wave shape. And flat plates are alternately joined.

Further, according to the present invention, a conductive thin film is formed by coating a metal thin film.

Further, according to the present invention, a conductive thin film is formed by applying a conductive paint.

The present invention relates to a needle-like electrode and a tubular counter electrode arranged in the vicinity of and surrounding the needle electrode in a lattice form as a whole, wherein the needle electrode is the same. While forming a plurality of discharge electrodes at the air flow upstream side end of the
This is formed by alternately connecting corrugated plates formed by bending a conductive sheet of carbon fiber or metal fiber into a square wave shape and flat plate-shaped flat plates.

Further, according to the present invention, the ends of a corrugated plate or a flat plate are bent in a square shape.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION First, an embodiment of the present invention will be described with reference to FIG. The intake hole 4 is opened, and a mesh-like cover 5 is detachably attached to the sheet metal in the intake hole, and the outlets 6, 6 are opened near the bottom surfaces of the left and right side surfaces. Wire meshes 7, 7 for grilling are attached to the blowing surface, and deodorizing filters 8, 8 made of activated carbon fiber or the like are attached inside the wire mesh.

Further, a dust collecting unit 9 of an electric dust collecting type is built in above the air intake hole 4 in the center of the outer case 3.
Ventilation paths 10 and 10 that communicate the intake hole 4 and the outlets 6 and 6 are defined between the dust collection unit and the outer case 3, and a cross is formed on both sides of the dust collection unit 9 in the ventilation path. Flow type blower fans 11 and 11 are attached, and by operating the blower fans, indoor air is sucked into the dust collecting unit 9 through the intake holes 4 and passes through the air passage 1
Deodorizing filters 8, 8 from outlets 6, 6 through 0, 10
It is configured to circulate indoors via.

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.
The cylindrical and lattice-shaped opposing electrodes 13 are inserted and mounted between the electrodes, and these electrodes are housed in a frame 14 having a frame shape.

The needle electrode 12 ... Is formed of, for example, a stainless steel plate in the shape of a strip, and a discharge portion 16 ... In which a plurality of discharge electrodes 15 ... Is integrally formed at the tip thereof, and an aluminum material that supports this discharge portion. ., And the like.

As shown in FIG. 3, the counter electrode 13 is obtained by coating both surfaces of a paper material 18 such as kraft paper with conductive metal thin films 19 and 19 such as aluminum foil, or the like. Acrylic long fibers are baked with nitrogen gas and carbonized, then woven into a cloth, and a conductive sheet material press-molded after further impregnating the cloth with a polyester resin, or a carbon fiber or metal fiber sheet material, As shown in FIGS. 2 and 4, the corrugated plate 20 ...
.. and flat plates 21 are formed by alternately joining them as shown in FIG.

Further, the corrugated plates 20 ... Are bent at both ends thereof into a rectangular shape, whereby the mechanical strength of the ends can be enhanced and deformation or the like can be prevented.

Although both ends of the corrugated sheet 20 ... Are bent in a square shape in the above embodiment, both ends of the flat plate 21. .. and one end of the flat plate 21 .. may be bent in a rectangular shape.

Further, in addition to the above embodiment, the corrugated plate 20.
. And flat plates 21 .. are formed by applying conductive paints 27 such as DOTITE XA-167 manufactured by Toho Kasei Co., Ltd. or antistatic ink for corrugated cardboard manufactured by Sakata Inks Co., Ltd. on both surfaces of the paper core material. You can use the one
In this case, the material of the paper core material is not so limited,
If the conductive paint is difficult to peel off, you can reduce the cost by selecting an inexpensive material.For example, if you select a material with relatively high mechanical strength such as the above kraft paper, discharge loss due to deformation will occur. Etc. can be prevented.

When the corrugated plates 20 ... And the flat plates 21 ... Are joined, a conductive adhesive may be applied to a part or the whole of the joint surfaces, and a partially conductive clip or stapler may be applied. You may join using such as.

During operation of the air cleaner 1, the blower fans 11, 11 are rotated and a predetermined high voltage is applied between the needle electrode 12 ... And the counter electrode 13 ... of the dust collecting unit 9. As a result, after the room air is sucked from the intake hole 4 through the cover 5, it passes between the needle electrode 12 ... And the counter electrode 13 ...
Then, after passing through the ventilation passage 10, the air is discharged again from the air outlets 6, 6 through the deodorizing filters 8, 8.

Then, by the cleaning operation, the counter electrode 13
.. If oil or the like is attached to the surface of the dust collection unit, it becomes possible to reduce the weight of the dust collection unit 9 by removing the counter electrode 13 from the dust collection unit 9 and installing a new counter electrode. Moreover, unlike the conventional method, it is not necessary to wash the counter electrode with a special detergent, and the running cost can be greatly reduced.

[0021]

According to the structure of the present invention, the counter electrode is formed by alternately joining the corrugated plate in which the electrode plate having the conductive thin film formed on the surface of the paper is bent in the square wave shape and the flat plate shape. By doing so, it is not necessary to wash the counter electrode with a special detergent and repeatedly use it as in the conventional case, 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 constitution of the present invention, the conductive thin film is formed by coating the metal thin film, so that the counter electrode can be formed, for example, by using the paper which is already on the market and which is thinned with aluminum. The counter electrode can be manufactured at a relatively low cost.

Further, according to the constitution of the present invention, since the conductive thin film is formed by applying the conductive paint, the paper material having high mechanical strength such as kraft paper can be used,
This makes it possible to prevent the occurrence of discharge loss due to the deformation of the counter electrode as much as possible.

Further, according to the constitution of the present invention, the counter electrode is formed by alternately joining corrugated plates obtained by bending a conductive sheet of carbon fiber, metal fiber or the like into a square wave shape and flat plate shapes, It is possible to reduce the weight of the counter electrode.

Further, according to the structure of the present invention, the end portions of the corrugated plate or the flat plate of the counter electrode are bent in a square shape to integrally form the frame plate, so that the frame is not formed by a separate component, It is possible to improve the mechanical strength of the end portions of the corrugated plate and the flat plate.

[Brief description of drawings]

FIG. 1 is a front vertical sectional view showing an embodiment of an air cleaner 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 is a perspective view of the same main part with a part cut away.

FIG. 4 is likewise an exploded perspective view of a main part.

FIG. 5 is a perspective view of the same main portion.

[Explanation of symbols]

12 Needle electrode 13 Counter electrode 19 thin film 20 corrugated board 21 flat plate

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriaki Hirano 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Takashi Matsuda 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) Reference JP-A-4-176310 (JP, A) JP-A-8-173846 (JP, A) JP-A-9-215945 (JP, A) Utility model registration 3033579 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B03C 3/00-3/88

Claims (5)

(57) [Claims] 1. A needle electrode and a needle electrode close to the needle electrode.
With a cylindrical counter electrode arranged in contact with and surrounding it
The overall smell of a grid of many combinations
A plurality of discharges at the end of the needle electrode on the upstream side of the air flow.
Along with forming the electrodes, the counter electrode is formed by alternately joining corrugated plates in which a conductive thin film is formed on the surface of paper and bent in a square wave shape and flat plate-like flat plates. Discharge electrode for air purifier. 2. The discharge electrode for an air cleaner according to claim 1, wherein the conductive thin film is formed by coating a metal thin film. 3. The discharge electrode for an air cleaner according to claim 1, wherein the conductive thin film is formed by applying a conductive paint. 4. A needle electrode and a needle electrode close to the needle electrode.
With a cylindrical counter electrode arranged in contact with and surrounding it
The overall smell of a grid of many combinations
A plurality of discharges at the end of the needle electrode on the upstream side of the air flow.
Along with forming an electrode, the counter electrode is formed by alternately joining corrugated plates and flat plates that are formed by bending a conductive sheet of carbon fiber or metal fiber into a square wave shape. Discharge electrode for purifier. 5. The discharge electrode for an air cleaner according to any one of claims 1 to 4, wherein an end of the corrugated plate or the flat plate is bent in a rectangular shape.