JPH024461A - Electrostatic precipitator - Google Patents

Abstract

PURPOSE:To enhance precipitation performance without damaging assembly properties and cost by constituting an electric discharge section consisting of a discharge electrode built in a casing main body and having discharge surfaces on both faces and a discharge wire and providing a precipitation section of charged dust. CONSTITUTION:Flat plate-shaped charged electrodes 9 disposed on the given positions between discharge wires 10 have discharge surfaces on both faces of one flat plate- shaped electrode 9 for the discharge from discharge wires 10 to which high voltage is applied. Therefore, much improvement can be effected for the lowering air flow generated by the reduced precipitated area generated by the bending width dimension heretofore available. Also, the relation between the dimension L between the flat plateshaped charge electrodes 9 and its width dimension l is L=l+Y, which increases the dimension variation scope between L and l by l dimension, comparing with the existing ones and shortens the dimension L between charge electrodes 9 by making the charge electrodes 9 and one flat plate by means of U-shaped notches 13. The numbers of flat plate-shaped charge electrodes 9 and discharge wires 10, therefore, can be increased to increase the charge volume and enhance precipitation performance to a large extent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electrostatic precipitator that charges dust and collects the charged dust by adsorbing it.

[Conventional technology]

In recent years, electrostatic precipitators that keep indoor air clean by removing floating dust, airborne microorganisms, cigarette smoke, etc. contained in indoor air, and sterilizing and deodorizing it have been attracting attention.

This type of electrostatic precipitator is disclosed in 1, for example, Japanese Patent Application Laid-open No. 55-2239.
The one disclosed in Publication No. 0 is known.

Figure 7 shows the configuration of a conventional electrostatic precipitator. In Figure 1, (1) is a casing made of an insulator.

An air inlet (2) and an air outlet +31 are formed, and a charging part (4) and a dust collecting part (5) are formed in this casing (1).
), a motor (6), and a fan 171 driven by this motor (61) are housed. Note that (8) indicates the air flow sucked in from the suction port (2).

The charging section 141 is constructed as shown in FIG.

That is, a plurality of U-shaped charged electrode plates (9) are arranged at predetermined intervals in parallel to the air flow (8) shown in FIG. As shown in Fig. 10, a U-shaped charged electrode plate (9) is placed at the center position between the electrodes (9).
) and facing each other at a predetermined distance apart, the discharge lines αG are connected to R4, respectively.
This discharge wire fi・ has one end connected to the discharge wire connection plate (
The other end of the discharge wire αG is attached to the discharge wire connecting plate (+1b) via a spring +17 for maintaining the tension of the discharge wire αG.

In addition, the dust collection part +51 is located at right angles to the U-shaped charged electrode plate (91), which has the same polarity as the U-shaped charged electrode plate (91) and is located behind the U-shaped charged electrode plate (9) and the discharge line αG, as shown in FIG. It is located.

Next, the operation will be explained with reference to FIG.

The dirty air flow (8) containing floating dust, floating microorganisms, smoke from smoke mushrooms, etc. is transferred from the suction port (21) of the casing fi+ to the charging section (4) consisting of the U-shaped charged electrode plate (91) and the discharge wire αG.
I'm going to do my best. A high voltage is applied between the U-shaped charged electrode plate (9) and the discharge line αG, and this high voltage causes each surface of the U-shaped charged electrode plate (9) to move away from the discharge line α1 as shown by the chain line. As a result of this discharge, dust particles in the polluted air are charged to the same potential as the discharge line al]. In the process of passing through the dust collecting part (5), this loaded dust is adsorbed by the dust collecting part (51), which is set at a potential opposite to that of the discharge wire a1, and the dirty air becomes clean air and is supplied into the room from the air outlet; 31. .

[Problem to be solved by the invention]

In the charging section of the conventional electrostatic precipitator configured as described above, the relationship between each dimension of the charged electrode plate (9) and the dust collection performance is as follows: In order to obtain high dust collection performance, the five dimensions are Discharge with applied voltage! +I [While the minimum size that allows normal discharge from I is desirable, the maximum allowable size of the charging section within the dust collector is desirable so that a wider range of charge can be achieved. In other words, charged electrode plates (
9) The dimension between them should be the minimum allowable dimension, and conversely, the charged electrode plate f91
The width dimension of is in a contradictory relationship with the maximum allowable dimension. However, as shown in FIG. 10, the conventional charged electrode plate 191 Fi is formed by bending the electrode plate portion into a U-shape.

A minimum dimension Z of the jig mold thickness is required for bending, and the load 1 shown in Fig. 9 requires an H-shaped notch a3 to obtain the charged electrode plate shape in the developed view of the electrode plate (91). The minimum dimension Y of the mold thickness of the mold jig was required.

Since the charged electrode plate of a conventional electrostatic precipitator is configured in a U-shaped bent shape as described above, there is a problem of a decrease in air volume due to a reduction in the suction area of the charged electrode plate (912) at the suction port (21). Also, as shown in the H-shaped notch (3), the 5th dimension and 1st dimension are L = 2/+Y, and the dimensional variation range of L and L is narrow, making it difficult to measure the improvement in dust collection performance. .

This invention was made to solve the above-mentioned problems, and provides an electrostatic precipitator that can improve dust collection performance without impairing the assembly workability and cost of the electrostatic precipitator. is intended to provide.

[Means to solve the problem]

The electrostatic precipitator according to this invention has a casing body.

The device is equipped with a charging section built into the main body and consisting of a flat charged electrode plate with discharge surfaces on both sides and a discharge wire, and a dust collection section that adsorbs dust charged by the charging section.

[Effect]

In the electrostatic precipitator according to the present invention, by making the charged electrode plate flat, the charging range can be expanded by increasing the variable range of the width of the charged electrode plate (I) and the distance between the charged electrode plates (Ll). Also, by making it planar, a decrease in air volume can be prevented.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view of the electrostatic precipitator according to the present invention, and FIG. 2 is a perspective view showing the configuration of the charging section (41) in FIG. 1. In these figures, FIG.

The same reference numerals as in FIG. 8 indicate the same parts, (91 is a flat charged electrode plate in the charging section (41), which is arranged parallel to the air flow (81) at a predetermined interval, 9) Discharge lines aυ are arranged facing each other at a predetermined distance apart.

FIG. 3 is a developed view of the flat charged electrode plate (91) mentioned above.

In order to obtain the charged electrode plate shape, a plurality of U-shaped notches α3 are provided at the minimum dimension Y width of the thickness of the cutting die jig. FIG. 4 is a diagram which is bent at right angles at the broken line in the figure and shows the positional relationship between the discharge line α0 and the flat charged electrode plate (9).

Next, U1 work will be explained.

A flat charged electrode plate (9) disposed at a predetermined position between 1Jal1 discharges the discharge from the group 11i ray αG to which a high voltage is applied to both sides of one flat charged electrode plate + 9). It can be a surface. Therefore, it has become possible to significantly improve the decrease in air volume due to the reduction of the suction area from the conventional bending width of 2 dimensions.

In addition, by making the charging electrode plate (9) into two flat plates with the U-shaped notch α3, the relationship between the dimension between the flat charging electrode plates (91) and the width l of the flat charging electrode plate (9) is as follows. L=/+Y, compared to the conventional L=2/+Y.

The dimensional variation range of L and l is increased by one dimension, and the width dimension l of the conventional U-shaped charged electrode plate (9) shown in FIG. width dimension l
In this case, the dimension between the charged electrode plates (91) can be shortened,
Therefore, by increasing the number of flat load plates (91) and discharge wires αυ installed, the charging capacity can be expanded, and the dust collection performance can therefore be greatly improved.

In the above embodiment, a comparison is made between the conventional U-shaped charged electrode plate (910, which has the same width l as shown in FIG. As explained above, the conventional U-shaped charged electrode plate (
Figure 6 shows a planar charged electrode plate in another embodiment of the present invention, which has the same dimensions as those between 91 and 91. The dimension l can be increased and the same effect as above can be obtained.

Note that Figure 5 is a developed view of Figure 6. 〔Effect of the invention〕 The electrostatic precipitator according to this invention has a casing body.

The structure is equipped with a charging section that is built into the main body and consists of a flat charged electrode plate with discharge surfaces on both sides and a discharge wire, and a dust collection section that adsorbs the dust charged in this charging section. Along with providing dust collection performance.

This has the effect of suppressing a decrease in air volume.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the electrostatic precipitator according to the present invention, Fig. 2 is a perspective view of the charging section, Fig. 3 is a developed view of the charged electrode plate, and Fig. 4 is the charged electrode plate and the discharge wire. 5 is a developed view of a charged electrode plate showing another embodiment of the present invention, FIG. 6 is a diagram showing the arrangement of charged electrode plates and discharge wires, and FIG. 7 is a conventional electrostatic precipitator. 8 is a perspective view of the charging section, FIG. 9 is a developed view of the charged electrode plate, and FIG. 10 is a layout diagram of the charged electrode plate and the discharge wire. In the figure, (1) is the casing, (41 is the charging section, (5
) is a dust collection part, (91 is a charged electrode plate, and QG is a discharge wire. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] An electrostatic precipitator comprising a casing main body, a charging section built into the main body and consisting of a flat charged electrode plate and a discharge wire with both surfaces serving as discharge surfaces, and a dust collection section that adsorbs dust charged in this charging section. Device.