KR101402745B1 - Charging apparatus in electrostatic precipitator system and method for charging - Google Patents

Abstract

The present invention relates to a charging apparatus of an electric dust collection system and a charging method using the charging apparatus. More specifically, the charging apparatus equipped in an electric dust collection system for charging the dust contained in the outside air flowed into the electric dust collection system comprises: a metallic body including a suction part allowing the outside air including dust to flow in and a vent allowing the charged outside air be discharged; and a carbon fiber brush equipped in the internal space of the metallic body and composed of a plurality of carbon fiber bundles having a specific polarity, thereby charging the dust included in the outside air introduced into the suction part.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging apparatus provided in an electric dust collection system, and a charging method using the charging apparatus.

The present invention relates to a charging apparatus for an electric dust collection system and a charging method using the charging apparatus. More particularly, the present invention relates to a charging device having a carbon fiber brush which is economical and maximizes a charging effect by optimizing the number and numerical values, and a dust collecting device having a fluidized-liquid collecting portion flowing along one side and a counterpart covered with an insulating material To an electric dust collecting system.

An apparatus for purifying a gas by electrostatically attracting fine particles contained in a gas such as air by applying an electric field to the charged particles to electrostatically collect the charged fine particles is referred to as an electrostatic precipitator. Among the electric dust collecting methods, the wet electric dust collecting method is a method of removing contaminants collected on the dust collecting plate by further constituting a washing water supplying device and a circulating device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a wet type dust collecting apparatus including a conventional dust collecting pole continuous washing apparatus. As shown in FIG. 1, a wet type dust collector including a conventional dust collecting pole continuous washing apparatus (Publication No. 10-2010-0065693) is fixed to a gap holding rod of a discharge pole 140, and a plurality of discharge poles (150) spaced apart by a predetermined distance between the discharge electrode (140) and the discharge electrode (140) and having a special treatment for reducing a critical surface tension on the surface thereof; A cleaning pipe header unit having a reinforcing rod installed between the dust collecting poles 150 and a unit injector 170 for spraying washing water radially on the surface of the dust collecting pole 150, And a water trough 180 for preventing the washing water from flowing to the discharge electrode interval holding rod to which a high voltage is applied. The water trough 150 is provided on the surface of the dust collecting electrode 150 in a continuous manner A continuous dust collecting pole cleaning apparatus capable of ultimately maintaining the efficiency of the wet electric dust collecting apparatus by minimizing the intermittent charging performed after shutting off the high voltage power source can be used to basically block the deposition of the tacky particles .

The wet type dust collector including the conventional continuous dust collecting pole cleaning apparatus shown in FIG. 1 prevents the accumulation of fine particles by flowing washing water through the surface of the dust collecting pole. However, there is a problem that the fine particles are collected by the attraction force with the dust collecting pole, so that the deposition of the fine particles can not be sufficiently prevented simply by flowing the washing water through the surface of the dust collecting pole.

Further, in the wet type dust collecting apparatus including the conventional continuous dust collecting pole cleaning device, there are problems such as a decrease in the dust collecting efficiency due to the fine particles remaining in the dust collecting pole and a risk of ozone generation. The conventional wet dust collecting apparatus including the dust collecting pole continuous washing apparatus has a problem that the metal plate charged therein is exposed and thus there is a high risk of electric shock of the user. There is a problem that an accident is likely to occur.

Korean Patent Publication No. 2010-0065693

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for optimizing the number and diameter of carbon fibers and the air suction area of a charging device, And a charging method having the carbon fiber brush having the carbon fiber brush.

In addition, according to an embodiment of the present invention, since the carbon fiber brush is composed of 10,000 to 30,000 carbon fiber bundles having a diameter of 2 to 3 탆, ozone (O ₃ ) generation is minimized and the charging effect can be maximized And a charging method having the carbon fiber brush having the carbon fiber brush.

According to an embodiment of the present invention, there is provided an electrostatic precipitator and a dust collecting method in which dust is collected in a liquid to prevent deposition of dust.

According to the embodiment of the present invention, since the dust collecting section is not required to be cleaned, it is advantageous in the maintenance and preservation of the product, and the dust collecting section is constituted by the liquid flow collecting section and the counterpart is covered with the insulating material, So that the risk of electric shock to the user is reduced, and the occurrence of sparks due to direct contact between the dust and the metal plate is prevented to prevent the fire accident.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

A first object of the present invention is to provide a charging device for charging dust contained in outside air introduced into an electric dust collection system, the charging device comprising: a suction part into which the external air containing dust is introduced; A metal body; And a carbon fiber brush provided in the inner space of the metal body and composed of a plurality of carbon fiber bundles having a specific polarity and a voltage applied thereto to charge the dust contained in the outside air introduced into the suction unit And a charging device provided in the electric dust collection system.

Further, the metal body may be formed in the form of a rectangular metal plate which forms side surfaces by four metal plates.

The length of the rectangular metal plate is 5 to 10 cm.

The width of the rectangular metal plate may be 7 to 13 cm.

The diameter of the carbon fiber brush may be 0.2 to 1 cm.

The carbon fiber brush may be composed of 10,000 to 30,000 carbon fiber bundles.

Further, the diameter of the carbon fibers is 2 to 5 mu m.

The apparatus may further include a voltage application unit for applying a specific voltage to the carbon fiber brush.

This specific voltage may be characterized as being -4 to -6 kV.

The control unit may further include a control unit for controlling a voltage applied to the carbon fiber brush to control a specific voltage applied to the carbon fiber brush.

As another category, a second object of the present invention is to provide a method for charging dust contained in outside air introduced into an electric dust collection system, comprising the steps of: Applying a specific voltage to a carbon fiber brush installed in an inner space of the body; Introducing external air including dust into the internal space through the intake port of the metal body; The dust contained in the outside air is charged to the same polarity as that of the carbon fiber brush by a carbon fiber brush composed of 10,000 to 30,000 carbon fiber bundles; And discharging outside air containing charged dust to the dust collecting apparatus side of the electric dust collecting system through the discharge port of the metal body. .

The voltage controller may control the voltage applying unit to adjust a specific voltage applied to the carbon fiber brush. The specific voltage may be -4 to -6 kV.

Therefore, according to an embodiment of the present invention, as described above, the number and diameter of carbon fibers and the air suction area of the charging device are optimized to maximize the charging effect and the charging effect.

According to an embodiment of the present invention, a carbon fiber brush composed of 10,000 to 30,000 carbon fiber bundles having a diameter of 2 to 3 탆 is provided, thereby minimizing the generation of ozone (O 3) and maximizing the charging effect Effect.

According to an embodiment of the present invention, a conventional dust collecting plate for dust collecting fine dust by an electric force is replaced with a liquid floating dust collecting unit using liquid to prevent fine dust deposition on the surface of the dust collecting electrode.

In addition, according to one embodiment of the present invention, by using a liquid flow collecting part composed of a non-metallic material instead of a metal collecting plate, it is possible to prevent a spark from occurring between the collecting plate and the corresponding part due to dust accumulated in a specific area of the collecting plate .

According to an embodiment of the present invention, there is an effect that the problem of ozone generation due to corrosion and corrosion phenomenon of the conventional metal dust collecting plate can be minimized.

Further, according to the embodiment of the present invention, since the use of the metal plate is not required in the dust collecting part, the surface of the product can be easily processed and the cost can be reduced.

According to an embodiment of the present invention, there is an advantage in that the dust is directly collected in the flowing liquid, and the dust collecting and cleaning of the dust collecting part are performed at the same time, thereby maintaining and preserving the product.

According to an embodiment of the present invention, the metal plate of the opposing portion is coated with an insulating material, thereby reducing the risk of electric shock to the user, preventing sparks due to direct contact between the dust and the metal plate, Effect.

According to an embodiment of the present invention, corrosion of a metal plate, which may be generated due to the direct contact between the water inside the electric dust collector and the metal plate of the counterpart, can be prevented.

1 is a sectional view of a wet type dust collecting apparatus including a conventional dust collecting pole continuous washing apparatus,
2 is a perspective view of an electric dust collection system according to an embodiment of the present invention,
3 is a partial cross-sectional view of an electric dust collection system according to an embodiment of the present invention,
4 is a perspective view of a charging device according to an embodiment of the present invention,
5 is a perspective view of a dust collecting apparatus according to an embodiment of the present invention,
Figure 6 is a cross-sectional view taken along the line AA of Figure 5 of a counterpart according to one embodiment of the present invention,
FIG. 7A is a perspective view of a counterpart having a barrel-type insulating case according to an embodiment of the present invention, FIG.
FIG. 7B is a perspective view of an opposed portion having a rolled, iron-on insulating case according to an embodiment of the present invention; FIG.
8 is a flowchart of a dust collection method using an electric dust collection system according to an embodiment of the present invention,
9 is a partial cross-sectional view of an electrostatic precipitator system according to an embodiment of the present invention, showing external air flow and liquid flow,
10 is a block diagram illustrating signal flow by a control unit according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, it includes not only a case where it is directly connected but also a case where the other part is indirectly connected with another part in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

<Configuration>

Hereinafter, the configuration and functions of the electric dust collecting system 1 according to an embodiment of the present invention will be described. 2 is a perspective view of an electric dust collecting system 1 according to an embodiment of the present invention.

2, the electric dust collecting system 1 according to an embodiment of the present invention mainly includes a body 2, an inflow passage 3 as a passage through which external air including dust is introduced, A plurality of charging devices 210, and a plurality of dust collecting devices 10, for example, as shown in FIG. The electric dust collecting system 1 according to an embodiment of the present invention may further include a carbon filter 5 provided on the inflow path 3 before external air is introduced into the charging device 210 . The carbon filter 5 may be formed before the charging device 210 in the flow direction of the outside air in order to primarily adsorb the dust contained in the outside air flowing into the inside of the electric dust collecting system 1. The carbon filter 5 is composed of activated carbon so that dust can be adsorbed on the fine pores present on the filter and can not escape.

The air purifying method by the electric dust collecting system 1 according to the embodiment of the present invention is largely based on the fact that external air including dust is charged through the blower 4 to have a specific polarity by the charging device 210, The collected dust is collected by the dust collecting apparatus 10 and the purified external air is discharged. Hereinafter, the configurations and functions of the charging device 210 and the dust collecting device 10, which are core components of the electric dust collecting system 1 according to an embodiment of the present invention, will be described in more detail. As shown in FIG. 2, the charging device 210 and the dust collecting device 10, which will be described below, are formed in the electric dust collecting system 1 in a plurality of ways.

3 shows a partial cross-sectional view of an electric dust collection system 1 according to an embodiment of the present invention. 3, the electric dust collecting system 1 according to an embodiment of the present invention includes a charging device 210 for charging dust contained in the introduced external air and a charging device 210 for charging the charging device 210 210), and a dust collecting device (10) for collecting the dust charged by the charging device (210) to the flowing liquid. The dust collecting device 10 includes a fluidized-liquid collecting part 220 for collecting dust charged in a liquid flowing down along one side surface thereof, a water tank 230 for storing liquid flowing in the fluidized-liquid collecting part 220, A liquid supply path 250 which forms a supply path so that liquid can flow from the water tank 230 to the liquid liquid collecting part 220, a liquid supply path 250 which connects the liquid supply path 250 and the fluid liquid collecting part 220, A circulation pump 240 for pumping the liquid stored in the water tank 230 so as to be able to move to the upper side of the fluid liquid collecting unit 220 along the flow path 220, A water tank filter 260 for removing foreign substances contained in the liquid and a metal plate 271 disposed at a position opposite to the fluid liquid collecting unit 220 and charged to a polarity such as the polarity of the dust charged by the charging device 210, And an opposing portion 270 having a covering layer 272 composed of an insulating material, It is is.

Hereinafter, the configuration and functions of the charging device 210 according to an embodiment of the present invention will be mainly described. 4 is a perspective view of the charging device 210 according to an embodiment of the present invention.

The charging device 210 according to an embodiment of the present invention charges dust contained in the outside air introduced into the electrostatic dust collecting system 1 by high pressure discharge. 4, the charging device 210 according to an embodiment of the present invention includes an inlet 212 through which external air containing dust is introduced and an outlet 213 through which external air charged is discharged And a carbon fiber brush 214 provided in the inner space of the metal body 211 and the metal body 211 and composed of a plurality of bundles of carbon fibers having a specific polarity and applied with a high voltage, Thereby charging the dust contained in the outside air.

The metal body 211 according to an embodiment of the present invention is preferably a rectangular metal plate having a square cross-section. In a specific embodiment, the length and height W of the rectangular metal plate are about 5 to 10 cm (preferably 7 cm) and the width and width L of the rectangular metal plate are about 7 to 13 cm (preferably 10 cm) do. When the area of the suction portion in which the outside air is sucked is too large, it is preferable that the area of the suction portion is about 100 cm ² because the charging efficiency is reduced.

As shown in FIG. 4, the charging device 210 according to an embodiment of the present invention includes a carbon fiber brush 214 composed of a bundle of carbon fibers at the center of the inner space of the metal body 211 . When each of the carbon fibers constituting the carbon fiber brush 214 has a large diameter, there is a problem that ozone (O3) is generated due to corona discharge because a higher voltage (about -10 kV) is required for ionization, There is a problem that the manufacturing cost is increased. Therefore, it is preferable that the diameter of each carbon fiber according to an embodiment of the present invention is limited to about 2 to 5 mu m.

In addition, the carbon fiber brush 214 according to an embodiment of the present invention is composed of about 10,000 to 30,000 bundles of carbon fibers. In the specific example, a carbon fiber brush 214 having about 12,000 carbon fibers having a diameter of about 2 to 5 mu m was used.

The charging method using the charging device 210 according to an embodiment of the present invention is a method of charging the charging device 210 using the voltage applying unit 215 to charge the charging device 210 of the charging device 210, A specific voltage is applied to the carbon fiber brush 214 provided in the inner space.

External air including dust is introduced by the blower 4 and flows into the internal space through the suction port 212 of the metal body 211. The dust contained in the outside air is charged to the same polarity as the carbon fiber brush 214 by the carbon fiber brush 214 composed of 10,000 to 30,000 carbon fiber bundles.

The external air containing the charged dust is discharged to the dust collecting apparatus 10 side of the electric dust collecting system 1 through the discharge port 213 of the metal body 211. In addition, the controller 290 controls the charge voltage application unit 215 to adjust the specific voltage applied to the carbon fiber brush 214. This specific voltage is preferably -4 to -6 kV.

Hereinafter, the structure and functions of the dust collecting apparatus 10 provided in the electric dust collecting system 1 according to an embodiment of the present invention will be mainly described. As described above, a plurality of dust collecting apparatuses 10 according to an embodiment of the present invention are provided inside the body 2, and are located after the charging apparatus 210 in the direction of flow of the outside air. Thus, external air including dust charged by the charging device 210 is introduced. 5 is a perspective view of a dust collecting apparatus 10 according to an embodiment of the present invention.

5, the dust collecting apparatus 10 according to an embodiment of the present invention includes a flow liquid (not shown) for collecting dust charged by the charging device 210 in the liquid flowing from the upper side to the lower side along one side, The liquid is collected in the water tank 230 from the fluid liquid collecting unit 220 and the fluid is collected between the water tank 230 and the fluid liquid collecting unit 220. [ A liquid supply path 250 that forms a flow path so as to be able to move to the upper side of the fluid liquid collecting part 220 along the liquid supply path 250, A pump 240, a water tank filter 260 provided between the water tank 230 and the liquid supply path 250 to remove foreign substances contained in the liquid flowing into the liquid supply path 250, , And is disposed at a position opposite to the polarity of the dust charged by the charging device 210 And a cover layer 272 coated with a polar metal plate 271 and a metal plate 271 with an insulating material so as to guide the outside air including the charged dust to one side of the fluid liquid collecting unit 220 ) And so on.

The fluid liquid collecting part 220 according to an embodiment of the present invention is disposed to be positioned after the charging device 210 in the flow direction of the outside air. The fluidized-liquid collecting part 220 is composed of a flow plate 221 and a fluid flowing part 222 formed as a space in which the fluid flows and occupies on the flow plate 221. The flow plate 221 is made of a non- desirable. Further, the liquid flowing on one side of the fluid liquid collecting part 220 is supplied from the water tank 230.

The dust charged by the charging device 210 moves along the flow direction of the external air and is collected in the liquid flowing on the flow plate 221 of the fluid liquid collecting part 220. The following experimental data shows that when the liquid flowing on the flow plate 221 is water, and the counterpart portion 270 is not provided in a ground state in which no voltage is applied to the liquid, the efficiency of collecting the charged dust into the liquid Lt; / RTI &gt; The following efficiencies may vary within a certain range of error due to experimental conditions.

Liquid applied voltage (kV) Polarity of dust Dust collection efficiency (%) 0 minus 4.7 0 plus 3

As shown in Table 1, when the voltage is not applied to the liquid and the counterpart portion 270 is not provided, it can be seen that the dust collecting efficiency is considerably low.

A voltage may be applied to the liquid flowing on the flow plate 221 to have a polarity or a polarity opposite to that of the dust charged by the charging device 210 in order to increase the collection efficiency. A direct voltage may be applied to the liquid stored in the water tank 230 in order to make the liquid flowing on the flow plate 221 polarized.

The following experimental data shows that when the liquid flowing on the flow plate 221 is water, the polarity of the liquid is charged in the same polarity as the polarity of the charged dust by the charging device 210, The efficiency of collection is shown in numerical values. The following efficiencies can be varied within the error range depending on the experimental conditions.

Liquid applied voltage (kV) Polarity of dust Dust collection efficiency (%) -12 minus 15.6 -10 minus 14.4 -8 minus 16 -6 minus 11.8 -4 minus 11 -2 minus 9.6 2 plus 2.2 4 plus 1.4 6 plus 3 8 plus 5.8 10 plus 6.6 12 plus 8.8

In the following experimental data, when the liquid flowing on the flow plate 221 is water, the polarity of the liquid is charged in the opposite polarity to the polarity of the charged dust by the charging device 210, The efficiency of collecting in liquid is shown in numerical value. The following efficiencies can be varied within the error range depending on the experimental conditions.

Liquid applied voltage (kV) Polarity of dust Dust collection efficiency (%) -12 plus 13.2 -10 plus 11.2 -8 plus 10.2 -6 plus 10.2 -4 plus 11.6 -2 plus 9.6 2 minus 11.8 4 minus 16.4 6 minus 21 8 minus 26.8 10 minus 35 12 minus 36.2

As shown in Tables 2 and 3, when the voltage applied to the liquid is applied with the polarity opposite to the polarity of the dust, the attractive force between the flowing liquid and the dust acts to increase the dust collection efficiency. However, when a high voltage is applied to the liquid, there is a problem of electric shock.

Therefore, in the embodiment of the present invention, the metal plate 271 is provided with the opposing portion 270 having the coating layer 272 coated with the insulating material, without applying a voltage to the liquid, Thereby providing a device 10.

In addition, the flow plate 221 functions as a passage for allowing liquid to flow on the fluid-liquid collecting unit 220. Since the shape of the fluid flowing part 222 can be determined according to the shape of the flow plate 221, the shape of the flow plate 221 can be determined by the flow The overall shape and area of the liquid collecting part 220 can be determined.

The liquid stored in the water tank 230 is pumped by the circulation pump 240 and flows along the liquid supply path 250 formed between the water tub 230 and the fluid liquid collecting part 220, And is sent to the upper side of the liquid collecting part 220.

The liquid supply path 250 is a path through which the liquid stored in the water tank 230 moves to the fluid-liquid collecting part 220, and may preferably be composed of a non-conductive and water-resistant member. The liquid having flowed on the fluid liquid collecting unit 220 flows into the water tank 230 again. The liquid introduced into the water tank 230 is again pumped by the circulation pump 240 and circulated while being supplied to the upper side of the fluid liquid collecting unit 220 through the liquid supply path 250.

5, the dust collecting apparatus 10 according to an embodiment of the present invention may include a dust collecting apparatus 200 for collecting dust contained in the liquid flowing into the liquid supplying path 250, It can be seen that the water filter 260 may be provided. That is, the liquid flowing on the flow plate 221 of the fluid liquid collecting unit 220 collects the charged dust in the charging device 210 and flows into the water tank 230, It is necessary to remove dust to be supplied to the liquid collecting part 220. The water tank filter 260 is provided on the path of the water tank 230 and the liquid supply path 250 to remove the dust contained in the liquid so that the dust contained in the liquid flows to the fluid liquid collecting part 220 Supply.

5, the dust collecting apparatus 10 according to an embodiment of the present invention includes a counterpart 270 without applying a voltage to the liquid, It is possible to increase the dust collecting efficiency.

6 illustrates a cross-sectional view of counterpart 270 in accordance with one embodiment of the present invention. 6 is a cross-sectional view taken along the line A-A in Fig. 6, the counterpart 270 according to an exemplary embodiment of the present invention includes a metal plate 271 and a metal plate 271, which have the same polarity as the polarity of the dust charged by the dust collector voltage application unit 280, 271, 272, 273, 271, 271, and 272, respectively, and it can be seen that they are opposed to the fluid-liquid collecting unit 220 and are installed at opposed positions. Such an insulating material may be composed of plastic, PP, PE, PC, and the like.

Since the first charged by the charging unit 270 and the charging unit 210 according to the embodiment of the present invention have the same polarity, an electrical repulsive force is generated between the charging unit 270 and the charged dust, The dust is moved in the direction of the fluid liquid collecting part 220 facing the opposing part 270 so that the efficiency of collecting the dust in the liquid flowing on the flow plate 221 of the fluid liquid collecting part 220 can be increased .

The experimental data set forth below shows the efficiency with which the dust charged by the charging device 210 according to the embodiment of the present invention is collected in the liquid flowing on the flow plate 221 of the fluid jetting dust collector 220, The results are compared with the experimental results. In carrying out the experiment, the insulating material covering the metal plate 271 of the opposing portion 270 is made of plastic, and the following efficiency can be varied within an error range according to experimental conditions.

Presence of counterpart Liquid applied voltage (kV) plate
Applied voltage (kV) Polarity of dust Dust collection efficiency (%) radish 0 0 minus 6 U 0 -15 minus 37.85

Referring to the numerical values shown in Table 4 above, when there is an opposing portion 270 including a metal plate 271 that has a voltage that is the same as the polarity of the dust, as compared with the case where the opposing portion 270 is not present It can be seen that the dust collection efficiency is higher. Compared with the case of applying the voltage to the liquid in comparison with the above-mentioned Table 3, it can be seen that the dust collecting efficiency is equal or higher than that of the case of applying the voltage to the liquid.

It is also understood that, although the metal plate 271 is covered with an insulating material, an electrical repulsive force acts between the metal plate 271 and the dust, and the dust collection efficiency is not significantly lowered by the covering layer 272.

Since the metal plate 271 of the opposing portion 270 is covered with the covering layer 272 made of an insulating material, the dust collecting apparatus 10 according to the embodiment of the present invention can prevent the dust from contacting with the metal plate 271 The occurrence of sparks due to the above phenomenon can be prevented. In addition, since the metal plate 271 of the opposing portion 270 is covered with the covering layer 272 made of an insulating material, it is possible to prevent a user's electric shock accident that may be caused by direct contact between the user and the metal plate 271 have. In order to prevent corrosion of the metal plate 271, which may be generated due to the direct contact between the moisture in the dust collecting apparatus 10 and the metal plate 271, the metal plate 271 is covered with the coating layer 272 made of an insulating material do.

In addition, although the metal plate 271 of the opposing portion 270 is covered with the insulating material, the electrical repulsive force is maintained between the metal plate 271 and the dust, so that the dust collecting efficiency can be enhanced.

FIG. 7A is a perspective view of an opposing part 270 having a barrel-type insulating case 273 according to another embodiment of the present invention, and FIG. 7B is a perspective view of an iron- And an insulating case 273, as shown in Fig.

As shown in FIGS. 7A and 7B, the opposing portion 270 includes a metal plate 271 charged with a polarity such as the polarity of the dust charged by the charging device 210, and an iron And an adhesive insulating case 273. Therefore, according to another embodiment of the present invention, the iron-on-insulator case 273 is an openable case made of an insulating material. The metal case 271 is housed in the case 273, It is possible.

<Operation method>

Hereinafter, an air purification method using the above-described electric dust collection system 1 will be described. 8 is a flowchart illustrating an air cleaning method using the electric dust collection system 1 according to an embodiment of the present invention. 9 shows a partial cross-sectional view of an electric dust collecting system 1 according to an embodiment of the present invention, showing external air flow and liquid flow. The solid arrow indicates the flow of the outside air and the dotted arrow indicates the flow of the liquid. 10 is a block diagram showing a signal flow by the control unit 290 according to an embodiment of the present invention.

A specific voltage is applied to the carbon fiber brush 214 installed in the inner space of the metal body 211 of the charging device 210 provided in the electric dust collecting system 1 by the charging device voltage applying unit 215 (S1).

A voltage of the same polarity as that of the dust to be charged by the metal plate 271 of the opposing portion 270 is applied by the dust collecting device voltage application portion 280 and the circulation pump 240 is operated, The liquid flows into the liquid supply path 250 so that the liquid flows along one side of the liquid liquid collecting part 220 (S2).

Then, the blower 4 is operated, and external air including dust flows into the internal space of the metal body 211 of the charging device 210 through the flow path (S3).

The dust contained in the outside air is charged to the same polarity as the carbon fiber brush 214 by the carbon fiber brush 214 composed of 10,000 to 30,000 carbon fiber bundles (S4). The outside air containing the charged dust is discharged to the dust collecting apparatus 10 side of the electric dust collecting system 1 through the discharge port 213 of the metal body 211 (S5).

At this stage, the control unit 290 controls the charge voltage application unit 215 to control the specific voltage applied to the carbon fiber brush 214, and the specific voltage is preferably -4 to -6 kV.

Then, the outside air having the charged dust is guided to the liquid-liquid collecting part 220 side by the opposing part 270 having the same polarity as the charged dust (S6). Next, the dust charged by the liquid flowing in the fluid liquid collecting unit 220 is collected (S7), the outside air in which the charged dust is collected is discharged, and the liquid collected in the dust is discharged to the water tank 230 (S8).

The liquid collected by the charged dust is introduced into the water tank 230 and circulated through the liquid supply duct 250 by the circulation pump 240 so as to circulate through the water tank 230 and the liquid The water tank filter 260 provided between the supply paths 250 removes foreign substances contained in the liquid flowing into the liquid supply path 250. This process is continued until the collection of the outside air is completed.

10, the controller 290 controls the particulate filter 270 to control the specific voltage applied to the metal plate 271 of the counterpart 270, The circulation pump 240 is controlled to control the flow rate of the external air flowing through the liquid supply path 250 and the fluid liquid collecting part 220 The flow rate of the flowing liquid can be controlled.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It is to be understood that such modified embodiments are within the scope of protection of the present invention as defined by the appended claims.

1: Electric dust collection system
2: Body
3: Inflow path
4: Blower
5: Carbon filter
10: Dust collector
210: Charging device
211: metal body
212: inlet
213: Outlet
214: Carbon fiber brush
215: Charging unit voltage applying unit
220:
221: Flow plate
222: liquid flow portion
230: aquarium
240: circulation pump
250: liquid supply path
260: water tank filter
270:
271: metal plate
272:
273: Insulation case
280: Dust collector voltage applying unit
290:

Claims (12)

A charging device for charging dust contained in outside air introduced into an electric dust collection system,
A metal body having a suction portion into which the outside air containing dust is introduced and an outlet through which the charged outside air is discharged;
A carbon fiber brush provided in an inner space of the metal body and composed of a plurality of carbon fiber bundles having a specific polarity by applying a voltage; And
And a voltage application unit for applying a specific voltage to the carbon fiber brush to charge the dust contained in the external air introduced into the suction unit,
The metal body
And is formed in the form of a rectangular metal plate which forms side surfaces by four metal plates,
The length of the rectangular metal plate is 5 to 10 cm, the width of the rectangular metal plate is 7 to 13 cm,
The diameter of the carbon fiber brush is 0.2 to 1 cm,
The carbon fiber brush is composed of 10,000 to 30,000 carbon fiber bundles,
The diameter of the carbon fibers is 2 to 5 탆,
Wherein the specific voltage is -4 to -6 kV.
delete delete delete delete delete delete delete delete The method according to claim 1,
And a control unit for controlling the voltage applying unit to adjust a specific voltage applied to the carbon fiber brush.
A method for charging dust contained in an incoming air using a charging device provided in the electric dust collecting system of claim 1,
Applying a specific voltage to a carbon fiber brush installed in an internal space of a metal body of a charging device provided in the electric dust collecting system by a voltage applying unit;
Introducing external air including dust into the internal space through the intake port of the metal body;
The dust contained in the outside air is charged to the same polarity as that of the carbon fiber brush by a carbon fiber brush composed of 10,000 to 30,000 carbon fiber bundles; And
And discharging outside air containing charged dust to the dust collecting apparatus side of the electrostatic dust collecting system through an outlet of the metal body,
Wherein the control unit controls the voltage applying unit to adjust a specific voltage applied to the carbon fiber brush, and the specific voltage is in the range of -4 to -6 kV. A charging method. delete

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