JPH02102752A - Electrostatic precipitator - Google Patents

Abstract

PURPOSE:To make an electrostatic precipitator compact by superposing a corrugated dust collecting electrode on an insulating film covering a platelike electrode and separating both end parts thereof at a constant interval to form the insulated parts and laminating plural pieces of both electrodes. CONSTITUTION:A dust-laden gas inlet 2 provided to the frame body 1 of a main body, a charge part 3 provided in the frame body 1 for charging dust particles, a dust collection part 7 having the electrode plates which perform dust collection of the charged dust particles by Coulomb's force and are different in polarity and a clean gas outlet 8 are provided in order. Further DC high- voltage power sources 13, 6 for impressing DC high voltage to the dust collection part 7 and the charge part 3 are provided. Furthermore double sides of a platelike electrode 9 of the dust collection part 7 for impressing DC voltage are covered with the insulating films 17 and a dust collecting electrode 10a is formed by corrugating a plate. The dust collecting electrodes 10a are oppositely superposed on the platelike electrode 9 via the insulating films 17 and both side ends of the electrode 10a are formed while holding the insulated parts of a small interval and the above-mentioned two electrodes opposed with each other are laminated at plural pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electrostatic precipitator for collecting and cleaning dust and dirt in the air.

BACKGROUND OF THE INVENTION In recent years, as awareness of health and hygiene has improved, interest in electrostatic precipitators that effectively collect dust in the air, such as cigarette smoke, has increased.

Conventional electrostatic precipitators are disclosed in, for example, Japanese Patent Publication No. 61-670.
8, the dust collection electrode is provided in the form of a flat plate,
A conductive layer is formed and exposed at the center of one side of an insulating film, a DC high voltage is applied, an insulating part is provided on both sides of the insulating film, and a spacer is provided in the insulating part. The structure consisted of alternating layers of layers.

Problems to be Solved by the Invention However, in such a conventional configuration, the dust collecting electrode is a flat plate, and it is necessary to increase the area of the dust collecting electrode per unit volume of the dust collecting part, that is, to make it more compact. So FA, there were 4 issues.

The present invention solves the above-mentioned problems, and aims to provide a compact electrostatic precipitator in which the dust collecting electrode has a corrugated shape.

Means for Solving All the Problems In order to achieve the above objects, the first aspect of the electrostatic precipitator of the present invention is as follows.
The means includes a dust-containing gas inlet provided in the main frame and the main body frame, a charging unit provided in the main body frame for charging the dust particles, and a mutually connected device that collects the charged dust particles using Coulomb force. A collecting section having electrode plates of different polarities, a clean gas outlet provided on the main body frame, and a DC high voltage power source disposed next to the dust collecting section and the charging section for applying high voltage direct current to the dust collecting section and the charging section. , the dust collecting section covers both sides of a flat electrode for applying high DC voltage with an insulating film, the dust collecting electrode is a flat plate formed into a corrugated shape, and the dust collecting part is connected to the flat electrode through the insulating film. The dust collecting electrode is stacked facing each other, and both ends of the dust collecting electrode are formed with insulating parts spaced apart from each other, and a plurality of the two facing electrodes are laminated.

In addition, the dust collection section of the second means was covered with fully insulated eyes/rem on both sides of a flat plate electrode for applying high DC voltage, and the flat electrode on the dust-containing gas inlet end face and the clean gas outlet end face were covered. MMI all edges of insulation film.

The dust collecting electrode is formed by forming a flat plate into a corrugated shape, and stacking the dust collecting electrode and the insulated flat plate-shaped electrode Ifif: facing each other and stacking them.

The dust collecting section of the third means is formed by covering both sides of a flat band-shaped electrode for applying high DC voltage with an insulating film, and having a plurality of flat parts meandering continuously in an S-shape. It is formed by laminating a plurality of flat parts of a band-shaped electrode with wave-shaped dust-collecting electromagnetic waves arranged in contact with each other.

Further, in the fourth means dust collecting section, both sides of a flat band-shaped electrode for applying DC high voltage are covered with an insulating film, the dust collecting electrode has a band-shaped flat plate in a corrugated shape, and the flat band-shaped electrode is covered with the insulating film. The spiral dust collecting section is formed by stacking the dust collecting electrode facing the dust collecting electrode and winding it in a spiral shape.

Effect: The first means of this configuration (therefore, high DC voltage is applied to the wave-shaped dust collection electrode that also serves as a spacer and the flat electrode).
When charged dust-containing gas flows in while DC high pressure is applied from fl, the amount of dust collected per unit volume increases.
A large amount of dust per volume is collected by the wave-shaped dust collection electrode, which is compactly constructed by increasing the upper electrode area.

In addition, by the second means, a wave-shaped dust collection electrode is formed by overlapping a flat plate electrode whose both sides are covered with an insulating film and whose ends through which gas flows in and out are sealed with adhesive and insulation. When the dust-containing gas flows into the dust part, it is attracted to the wave-shaped dust collecting electrode having a larger dust collecting electrode area per unit volume, and more dust is collected per unit volume. Further, dust can be collected without causing spark discharge or current leakage due to dust adhesion.

Further, by a third means, a wave-shaped dust collecting electrode is attached to an electrode formed in a flat band shape, both sides of which are covered with an insulating film, and which has a plurality of flat parts and is continuous and meandering in an S-shape. The dust collecting part formed in layers in contact with the parts has a simple structure because there are fewer connecting parts to be connected to the DC high voltage power supply.

In addition, by the fourth means, a dust collecting part is formed by stacking the flat band-shaped electrode whose both sides are covered with an insulating film and a band-shaped and wave-shaped dust collection electrode and winding it in a spiral shape. The connection portions between the flat band-shaped electrode for connecting the power source and the dust collecting electrode are each required at one place, which simplifies the structure.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 3. In Fig. 1, a dust-containing gas inlet 2 is inserted into the main body frame 1.
is provided, and a charging section 3 is disposed at a subsequent stage within the main body frame 1. The charging section 3 includes a plurality of parallel plate electrodes 4 and a plurality of linear discharge electrodes 6, and is composed of a charging DC high voltage generating section 6 that applies a DC high voltage to these two types of electrodes.

The rear stage 1 of the charging section 3 has a dust collection section 7 having electrode plates of different polarities that collect dust particles charged by the charging section 3 by Coulomb force, and a clean gas outlet 8 on the main body frame at the rear stage.
is provided.

Figure 2 (→, (In koji, a flat plate-shaped electrode 9 that applies high DC voltage is insulated by being covered with an insulating film 17 on both sides. A wave-shaped dust collection electrode 10a is stacked on a flat electrode 9 whose both sides are covered with an insulation film 17 so as to face each other with the insulation film 17 interposed therebetween. The ends on both sides are formed with insulating parts spaced apart from each other, and a plurality of the above-mentioned two opposing electrodes are laminated.Also, the wave-shaped dust collecting electrode allows gas to pass through. It also serves as a spacer to maintain a certain distance between the passages.The flat electrode 9 that applies high DC voltage is connected to the positive electrode side of a high voltage DC power supply 13 via a high voltage terminal 11 and a high voltage terminal plate 12. The shaped dust collecting electrode 10a is connected to the DC high voltage power supply 1 via the dust collecting electrode terminal 14 and the dust collecting electrode terminal plate 16.
It is connected to the negative side 16 of 3.

In the electrostatic precipitator configured as described above, when dust-containing air is sent from an external blower, it flows into the charging section 3 from the dust-containing gas port 2 provided in the main body frame 1 . Here, due to the action of the charging DC high voltage generator 6, corona discharge occurs between the parallel plate electrode 4 and the discharge electrode 6, and the dust is charged. The charged dust is sent to the dust collecting section 7. In the dust collection area, an electric field is generated between the flat plate-shaped "0Mm9" to which DC high voltage is applied by the DC high voltage power supply 13 and the wave-shaped dust collection electrode 10a, and the charged dust is moved by the Coulomb force into the dust collection chamber. I
Dust is collected by Jii10a. Clean air from which dust has been removed is blown out from the clean gas outlet 13 and is discharged or supplied to a necessary location. In the dust collecting section 7, the flat electrode 9 to which a DC high voltage is applied is covered on both sides with an insulating film 17, and as shown in FIG. : A dust collection chamber (to) 10a is provided in the central part except for the dust collection chamber (to) 10a. Therefore, electrical leakage and spark discharge from the flat electrode 9 to which DC high voltage is applied to the corrugated dust collection chamber W10a do not occur because the insulating portions 21 at both ends are provided. Since the dust collection electrode 10a has a wave shape, a large dust collection area per unit volume can be obtained, and the electrostatic precipitator can be made more compact. Further, since the dust collection chamber [10a] has a corrugated shape, it can also serve as a spacer for maintaining a gap through which gas passes, thereby reducing costs.

Next, an embodiment of the present invention relating to claims (Fig. 4).

This will be explained based on FIG. The flat electrode 9 that applies high DC voltage has insulating films 1 on both sides, as in the 0M embodiment.
7 and both ends of the dust-containing gaff inlet end face 23 and the clean gas outlet end face 24 are adhesively sealed and sealed with an insulator. A plurality of the plate-shaped electrodes 9 for applying the DC high voltage and the wave-shaped dust collection chambers 1'M10b are alternately stacked with insulating films interposed therebetween. A flat electrode 9 that applies high DC voltage is connected to the dust-containing gas inflow end face 2.
3. Since the clean gas outlet end face 24 is also adhesively sealed and covered with an insulating film, the wave-shaped dust collection electrode 10b is placed close to the dust-containing gas inflow end face 23 and the clean gas outlet end face 24, and is connected to the flat electrode. Even if the entire surface of the electrode 9 is in contact with the flat electrode 9 to which DC high voltage is applied, the wave-shaped dust collection chamber 1i1o
No leakage or spark discharge occurs between the Therefore, the area of the dust collecting electrode can be increased accordingly, and the electrostatic precipitator can be made more compact.

Next, the claim (an embodiment of the present invention relating to a plow is shown in FIG. 6(a))
, (explained based on lle. 1 to apply high DC voltage
The flat strip-shaped electrode 19 is a strip-shaped double-sided insulating film 18.
The dust collecting electrode 1 has a plurality of planar parts and is formed in a meandering S-shape.
0a are arranged facing each other with a strip-shaped insulating film 18 in between, and as a result, a plurality of them are laminated. Since the flat band-shaped electrode 9 to which a DC voltage is applied is formed of one piece, it is connected to a DC high-voltage power source 13 on the positive electrode side via a cylindrical pressure terminal 11 at one location. Wave-shaped dust collection electrode 10a
is connected to the negative electrode side 16 of the DC high voltage power supply 13 via the dust collecting electrode terminal 14 and the dust collecting electrode terminal plate 16. Load m part 3
When the dust rrt flows in, an electric field is generated between the flat band-shaped electrode 19 to which DC high voltage is applied by the DC high voltage power supply 13 and the dust collection electrode 10a, and the wave-shaped dust collection electrode is caused by Coulomb force. The dust is sucked into 10a and collected. Since the flat band-shaped electrode 19 is formed of one continuous piece, the high voltage electrode terminal 11 is only needed in one place, which further simplifies the structure.
Cost reduction can be achieved.

Next, an embodiment of the present invention regarding the claim (→) is shown in FIG. 7(a).
, (Explanation will be based on BL. One flat and strip-shaped electrode 19 that applies DC high voltage is a strip-shaped film 18 on both sides.
covered with. This electrode and a dust collection chamber 1i20 formed by forming a band-shaped flat plate into a corrugated shape are stacked facing each other with a band-shaped insulating film 18 interposed therebetween, and are wound into a spiral shape to form a spiral dust collection section 22. flat strip-shaped electrode 19
is connected to the positive electrode side of the DC high voltage power supply 13 via the high voltage terminal 11. The band-shaped and wave-shaped dust collection electrode 20 is connected to the negative electrode side 16 of the DC high voltage power supply 13 via the dust collection electrode terminal 14 . When the dust charged by the charging unit 3 flows into the spiral dust collection unit 22, the DC high voltage power supply 13 creates an electric field between the flat band-shaped electrode 19 to which DC high voltage is applied and the wave-shaped dust collection chamber 1i20. Since the dust is generated, the dust is sucked into the wave-shaped dust collection chamber i2° by Coulomb force and collected. Since both sides of the flat band-shaped electrode 19 to which DC high voltage is applied are covered with the band-shaped insulating film 18, spark discharge occurs even if the band-shaped and wavy dust collection electrode 2o is in contact with it and energized. do not have. Since the dust collection electrode 2o has a corrugated shape, it can also serve as a spacer, reducing costs and increasing the dust collection area per unit volume, making it possible to make it more compact. Because of the spirally wound shape, manufacturing is simple, and the high-voltage electrode terminal 11 and the dust collection electrode terminal 14 only need to be connected at one location, simplifying the structure and reducing costs.

Effects of the Invention As described above, according to the present invention, both sides of the flat electrode to which DC high voltage is applied in the dust collection section are covered with an insulating film, the dust collection electrode is made into a wave shape, and the dust collection electrode is When stacked on an insulating film that covers a flat electrode, an insulating part is provided at both ends at a certain distance, and a plurality of both electrodes are stacked, so that the electrostatic precipitator has a small area of dust collecting electrode per unit volume. This has the effect of making it larger and more compact.

Claim (■) In the electrostatic precipitator, both sides of a flat electrode that applies high DC voltage are covered with an insulating film, and the insulating film on the dust-containing gas inlet end face and the clean gas outlet end face are bonded for insulation. The sealed, corrugated dust collection electrode and l'
i By alternately stacking a plurality of flat electrodes, even if the dust collection electrodes are covered with an insulating film that is in contact with them and the entire width of the flat electrodes is covered, the flat electrodes and the wave-shaped dust collection No leakage current or spark discharge occurs between the device and the electrode, the dust collection area can be increased, and the device can be made more compact.

In the electrostatic precipitator of claim (3), the high-voltage electrode terminal connection portion is formed by forming the flat electrode, which applies DC high voltage, from a single continuous plate, with both sides covered with an insulating film. Claim (In the electrostatic precipitator of 4), it is possible to use only one electrode in one place, simplify the structure, and reduce costs. It is formed by stacking wave-shaped dust collection electrodes and winding them in a spiral shape, making it easy to manufacture.
The configuration in which the dust collecting electrode terminals are only required at one location each simplifies the structure and has the effect of reducing costs.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing the structure of an electrostatic precipitator according to an embodiment of the present invention, Fig. 2(a) is a front view showing the structure of the electrostatic precipitator, and Fig. 2 (the ribs are the same). FIG. 3 is a partially enlarged view of the electrodes constituting the dust collection section, FIG.
FIG. 6 is a plan view of the flat electrode and wave-shaped dust collecting electrode that are superimposed on each other, and FIG. The clean gas outlet end face in the third embodiment of the invention.

Claims (4)

[Claims] (1) A main body frame, a dust-containing gas inlet provided in the main body frame, a charging section that charges dust particles provided in the main body frame, and a charging unit that collects charged dust particles using Coulomb force. A dust collection section having a polar electrode plate and a clean gas outlet are sequentially arranged, and a DC high voltage power source is provided to apply a DC high voltage to the dust collection section and the charging section, and the DC voltage of the dust collection section is applied. The flat electrode is covered with an insulating film on both sides, and the dust collecting electrode is formed by forming a flat plate into a corrugated shape, and stacked on the flat electrode facing the dust collecting electrode with the insulating film interposed therebetween. The electrostatic precipitator is formed by laminating a plurality of the above-mentioned two opposing electrodes, in which both ends of the dust collecting electrode are formed with insulating parts spaced apart from each other. (2) In the dust collection section, both sides of a flat electrode that applies DC high voltage are covered with an insulating film, and all end faces of the insulating film covering the flat electrode are covered at the dust-containing gas inlet end face and the clean gas outlet end face. The dust collecting electrode is formed by bonding and insulating and sealing, forming a flat plate into a corrugated shape, and stacking a plurality of the dust collecting electrode and the insulated flat plate electrode facing each other. electrostatic precipitator. (3) The dust collection section is made by covering both sides of a flat band-shaped electrode that applies DC high voltage with an insulating film, and having multiple flat parts.
The electric dust collector according to claim (1), wherein the electric dust collector is formed in a continuous meandering shape, and is formed by laminating wave-shaped dust collection electrodes which are arranged in contact with a plurality of plane parts of the flat band-shaped electrodes. Device. (4) In the dust collecting section, both sides of a flat band-shaped electrode that applies DC high voltage are covered with an insulating film, and the dust collecting electrode has a band-shaped flat plate in a corrugated shape, and the flat band-shaped electrode is connected to the insulating film through the insulating film. 2. The electrostatic precipitator according to claim 1, wherein the dust collector is stacked facing the dust collecting electrode and wound in a spiral shape to form a spiral dust collecting part.