KR102331015B1 - Electrostatic precipitator - Google Patents

Abstract

The present invention relates to an electric dust collector, and the electric dust collector according to the present invention is an electric dust collector for collecting charged fine particles by charging contaminated air. It characterized in that it comprises a high-pressure gas injection unit for injecting high-pressure gas toward the fine particles collected in the dust collecting unit, and a suction unit for sucking the fine particles separated from the dust collecting unit by the high-pressure gas injection unit at the other side of the dust collecting unit. .

Description

Electrostatic precipitator {ELECTROSTATIC PRECIPITATOR}

The present invention relates to an electric dust collector, and more particularly, to an electric dust collector capable of easily removing fine particles collected on a dust collector with respect to a large-capacity electric dust collector used in subway stations and the like.

Recently, as the problem of air pollution such as fine dust has been greatly highlighted, home air purifiers such as air purifiers have been widely supplied. Apart from home or personal air purifiers, large-capacity air purification systems are also installed in public places where air is easily polluted, such as subway stations.

Currently, the air purification system of subway stations uses a method of filtering out dust or harmful substances through a filter, but in subway stations with high pollution levels, large-capacity filters are polluted within a very short period of time, resulting in poor filter performance and poor air purification efficiency. A problem arises. In addition, there is a problem that the cost is high to replace the filter.

Republic of Korea Patent Publication No. 10-2011-0014076

Accordingly, an object of the present invention is to solve such a problem in the prior art, by spraying high-pressure gas from one side of the dust collecting unit to separate the fine particles from the dust collecting plate, and the suction unit on the other side on the other side sucks them to collect the fine particles collected on the dust collecting plate. An object of the present invention is to provide an electric dust collector that can be easily removed.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, there is provided an electric dust collector for collecting charged fine particles by charging polluted air, comprising: a dust collector for collecting the charged fine particles by electrostatic force; a high-pressure gas injection unit for injecting a high-pressure gas from one side of the dust collecting unit toward the fine particles collected in the dust collecting unit; and a suction unit for sucking fine particles separated from the dust collecting unit by the high-pressure gas injection unit at the other side of the dust collecting unit.

Here, the dust collecting part is arranged in parallel with a plurality of dust collecting plates spaced apart from each other, a potential difference is formed between the neighboring dust collecting plates, the high-pressure gas spraying part is disposed on one side of the dust collecting part into which the fine particles are introduced, and the suction part is the high-pressure gas minute It may be disposed on the other side of the dust collecting part to face the dead part.

Here, the high-pressure gas injection unit includes an injection nozzle for injecting high-pressure gas, the suction unit includes a hopper, and the injection nozzle and the hopper are respectively movable so as to face each other.

Here, the high-pressure gas injection unit may include an injection nozzle for injecting high-pressure gas, and the injection nozzle may be angled vertically or horizontally.

Here, the dust collecting plate may be formed of a plastic film layer and a coating layer coated with carbon on the film layer.

Here, the dust collecting plate is a first dust collecting plate to which a high voltage is applied and one or more discharge pins formed on the edge of the plate are formed, and a second dust collecting plate for collecting fine particles charged on the plate surface by an electrostatic force formed by a potential difference with the first collecting plate. can be formed.

Here, the high-pressure gas injection unit may include a compressor that compresses the gas to inject compressed air.

Here, comprising an ion generator including carbon fibers and a voltage applying device for applying a high voltage to the carbon fibers, further comprising a charging unit disposed in front of the dust collecting unit, wherein the high-pressure gas injection unit is between the charging unit and the dust collecting unit is disposed in, the high-pressure gas injection unit can remove the fine particles accumulated on the carbon fiber by spraying the high-pressure gas toward the charging unit.

Here, the plurality of ion generators may be disposed to be spaced apart from at least one fixed rod, and the fixed rod may be rotatable.

Here, when the fine particles are charged, the ion generator rotates the fixed rod to face the direction in which the contaminated air flows, and when removing the fine particles accumulated on the carbon fiber, the ion generator operates the rear high-pressure gas injection unit. The fixing rod may be rotated to face it.

Here, the high-pressure gas injection unit may include an injection nozzle for injecting high-pressure gas, and the injection nozzle may be rotatable.

Here, the flow velocity of the gas injected from the high-pressure gas injection unit is preferably 250 m/s or more.

According to the electrostatic precipitator of the present invention as described above, since fine particles are collected by the method of electrostatic precipitation without using a filter, the cost of replacing the filter can be reduced, and the dust collected on the dust collecting plate using the high-pressure gas injection unit and the suction unit It has the advantage of being inexpensive and easy to remove fine particles.

In addition, by coating carbon on the flexible plastic film layer to configure the dust collecting plate, there is also an advantage that the dust collecting plate can be configured at a low cost and light weight.

In addition, there is an advantage that fine dust accumulated on the carbon fiber of the electric charge part can be removed by using the high-pressure gas injection unit for removing the fine dust collected in the dust collecting unit.

1 is a view showing a schematic configuration of an electric dust collector according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating a charging part in FIG. 1 .
3 is a perspective view illustrating a state in which the fixing rod is rotated to remove fine dust from carbon fibers in FIG. 2 .
4 is a view illustrating a state in which the high-pressure gas is injected from the high-pressure gas injection unit toward the dust collecting plate according to the present invention.
5 is a view showing a state in which the hopper of the suction unit according to the present invention sucks dust.
FIG. 6 is a view showing a cross section of A of FIG. 5 .
FIG. 7 is a view illustrating an operation of removing dust accumulated on carbon fibers of a charged part in the electrostatic precipitator of FIG. 1 .
8 is a view showing a schematic configuration of an electric dust collector according to another embodiment of the present invention.
9 shows the dust collector of FIG. 8 .
10 is a graph showing the experimental results of measuring the cleaning efficiency compared to the flow rate of the gas injected from the injection nozzle.

The specific details of the embodiments are included in the detailed description and drawings.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining an electric dust collector according to embodiments of the present invention.

1 is a view showing a schematic configuration of an electric dust collector according to an embodiment of the present invention, FIG. 2 is a perspective view showing a charging part in FIG. 1, and FIG. 3 is for removing fine dust of carbon fiber in FIG. 2 It is a perspective view showing a state in which the fixed rod is rotated, and FIG. 4 is a view showing a state in which the high-pressure gas is injected from the high-pressure gas injection unit toward the dust collecting plate according to the present invention, and FIG. 5 is a hopper of the suction unit according to the present invention. It is a view showing a state of sucking dust, FIG. 6 is a view showing a cross section of FIG. 5A, and FIG. 7 is an operation of removing the dust accumulated on the carbon fiber of the charged part in the electric dust collector of FIG. is a drawing that

The electric dust collector according to an embodiment of the present invention may include a charging unit 110 , a dust collecting unit 120 , a high-pressure gas injection unit 130 , and a suction unit 140 .

The housing 100 provides a path for the contaminated air to move, and the charging unit 110 , the high-pressure gas injection unit 130 , the dust collecting unit 120 , and the suction unit 140 are sequentially disposed along the movement direction of the air. can be At this time, the positions of the high-pressure gas injection unit 130 and the suction unit 140 may be exchanged, but as shown, the high-pressure gas injection unit 130 is formed in front of the dust collecting unit 120 and the suction unit 140 . It is preferable to be formed behind the dust collecting unit 120 .

The charging unit 110 is installed on the inlet side through which the polluted air is introduced to generate ions to charge the fine particles in the polluted air. The charging unit 110 may include an ion generator 115 made of a plurality of carbon fiber 116 strands and a voltage applying device 118 for applying a high voltage (current) to the ion generator 115 .

When a high voltage (current) is applied to the carbon fiber 116 by the voltage applying device 118 , a large amount of ions is generated from the carbon fiber 116 . At this time, (+) ions or (-) ions are generated according to the type of current applied from the voltage applying device 118 .

When a high voltage (current) is applied to the ion generator 115 made of the carbon fiber 116 to generate ions, a large amount of ions are generated even at a lower voltage than the corona discharge generated by applying a high voltage between the discharge electrode and the corresponding ground electrode. By generating the ozone, the generation of ozone is suppressed and power consumption is reduced. In addition, the carbon fiber 116 has a characteristic that does not require a ground electrode when generating ions by applying a voltage (current), and by not including a metal ground electrode, corrosion does not occur even in a strong acid environment. .

At this time, as shown in FIG. 2 , the charged part 110 may be formed of a plurality of ion generators 115 . The ion generator 115 can be fixed to the fixed rod 114 long in the vertical direction at a predetermined interval, and a high voltage is applied from the voltage applying device 118 to each ion generator 115 through the inside of the fixed rod 114 . A supply winding may be formed.

At this time, as a plurality of the fixing rods 114 are arranged in the horizontal direction, a plurality of ion generators 115 can be arranged to be spaced apart from each other at predetermined intervals on the path surface through which the contaminated air flows. At this time, as shown in FIG. 2 , by installing a diaphragm 112 for each ion generator 115 , it is possible to separate the incoming contaminated air into each compartment 113 formed by the diaphragm 112 . In addition, the air polluted by the ions generated by the ion generator 115 installed in each compartment 113 is charged. By charging the polluted air by ions generated from the ion generator 115 in each compartment 113 as described above, it is possible to increase the charging efficiency of the fine particles to increase the dust collection efficiency.

At this time, the carbon fibers 116 of the ion generator 115 may be formed in a direction in which the contaminated air flows, but in this embodiment, they are disposed in a direction opposite to the direction in which the contaminated air flows to charge the fine particles. let it be At this time, as shown in FIG. 1 , the ion generator 115 may be disposed in a direction opposite to the direction in which the contaminated air flows, rather than in the front of the diaphragm 112 in the direction in which the contaminated air flows. .

At this time, the fixed rod 114 for arranging the plurality of ion generators 115 may rotate. When charging the fine particles as shown in FIG. 2, the carbon fibers 116 of the ion generator 115 are positioned to face the direction in which air flows, and as shown in FIG. 3, the ion generator 115 ), when removing the fine dust accumulated on the carbon fibers 116, the fixed rod 114 can be rotated 180 degrees to rotate the carbon fibers 116 of the ion generator 115 in the opposite direction. The configuration and operation of removing fine dust from the carbon fiber 116 will be described later with reference to FIG. 7 .

The fixing rod 114 may be configured to rotate individually, or a plurality of fixing rods 114 may be configured to rotate integrally. The configuration for rotating the fixing rod 114 may use a known technique for rotating the shaft of the fixing rod 114 by a power means such as a motor (not shown).

The dust collecting unit 120 collects the fine particles charged by the ions generated by the charging unit 110 on the dust collecting plate 122 by electrostatic force.

As shown in FIG. 5 , the dust collecting unit 120 generates an electrostatic force by arranging a plurality of dust collecting plates 122 spaced apart in parallel and forming a potential difference between the neighboring dust collecting plates 122a and 122b. Accordingly, the charged particles may move by the electrostatic force and be collected by the dust collecting plate 122 . At this time, by alternately disposing the dust collecting plate 122a to which a high voltage is applied and the dust collecting plate 122b to which the voltage of the ground or opposite polarity is applied with respect to the plurality of dust collecting plates 122 arranged in parallel, the neighboring dust collecting plates 122a and 112b An electrostatic force can be generated by forming a potential difference between them.

5 illustrates that the plurality of dust collecting plates 122 are arranged in parallel in the horizontal direction, they may be arranged in parallel in the vertical direction.

At this time, each dust collecting plate 122 may be formed of a film layer 1221 and a coating layer 1222 as shown in FIG. 6 . The film layer 1221 is formed in the form of a flexible thin plate made of a plastic material, and a coating layer 1222 coated with carbon is formed on both sides of the film layer 1221 . Accordingly, it may be electrically connected through the coating layer 1222 . The dust collecting plate 122 of the present invention configured in this way has ductility that can be easily bent and can be configured very lightly. In addition, compared to the conventional dust collecting plate 122 formed of a metal or CFRP material, it can be easily manufactured at a very low price.

In the case of an electric dust collector disposed in a subway station, the number of the dust collecting plate 122 may be very large due to the large capacity and size of the dust collecting unit 120. As described above, the dust collecting plate 122 comprising the film layer 1221 and the coating layer 1222. ), it is possible to configure the dust collecting unit 120 light and inexpensive.

The high-pressure gas ejection unit 130 is disposed in front of the dust collecting unit 120 and sprays high-pressure gas toward the space between the dust collecting plates 122 to separate the fine particles collected on the dust collecting plate 122 from the dust collecting plate 122 . let it be

In the present invention, a compressor 134 for generating high-pressure gas may be included. When a fan or a blower is used, the cleaning efficiency is very low, so it is necessary to inject the high-pressure gas using the compressor 134 . At this time, the injection speed of the gas, which has a critical meaning when cleaning using high-pressure compressed air, will be described later with reference to FIG. 10 .

In addition, the flow of the gas from the front to the rear is formed by the high-pressure gas injected from the high-pressure gas injection unit 130 to move the separated fine particles to the rear of the dust collecting unit 120 . Fine particles separated from the dust collecting plate 122 by the high-pressure gas ejection unit 130 and moving backward may be sucked and treated by the suction unit 140 located at the rear of the dust collecting unit 120 .

The injection nozzle 132 of the high-pressure gas injection unit 130 may be configured to move in up, down, left, and right directions. Therefore, the injection nozzle 132 of the high-pressure gas injection unit 130 moves in the longitudinal direction and the width direction of the dust collecting plate 122, and can perform the injection process of high-pressure gas on the entire dust collecting plate 122 arranged in plurality. .

Furthermore, as shown in FIG. 4, by adjusting the injection angle of the injection nozzle 132 constituting the high-pressure gas injection unit 130, the high-pressure gas is uniformly injected toward the rear and the front with respect to the direction in which the air flows. It is preferable to inject high-pressure gas over the entire area of the dust collecting plate 122 as possible.

As shown in Fig. 4 (a), the angle between the spray nozzle 132 and the dust collecting plate 122 is reduced so that the high-pressure gas injected from the spray nozzle 132 reaches the rear of the dust collecting plate 122. , The high-pressure gas injected from the injection nozzle 132 by increasing the angle between the injection nozzle 132 and the dust collecting plate 122 as shown in Fig. 4 (b) reaches the front part of the dust collecting plate 122 By doing so, it is possible to allow the high-pressure gas to reach evenly in the front and rear directions.

Furthermore, although not shown in FIG. 4 , the angle may be adjusted in the left and right directions instead of up and down based on the dust collecting plate 122 so that the high-pressure gas can reach the dust collecting plate 122 for the entire left and right areas.

In addition, the injection nozzle 132 of the high-pressure gas injection unit 130 may rotate in a horizontal direction as shown in FIG. 7 . That is, when removing the fine dust from the dust collecting plate 122 , the spray nozzle 132 is disposed from the front of the dust collecting unit 120 toward the dust collecting unit 120 to spray high-pressure gas. On the other hand, in order to remove the fine dust accumulated in the charged part 110 (more specifically, the carbon fiber 116 of the ion generator 115) located in front of the high-pressure gas injection part 130, the injection nozzle 132 is installed. By rotating 180 degrees, the spray nozzle 132 may be disposed to face the charging unit 110 . If dust accumulates on the carbon fiber 116 of the charging unit 110, the charging efficiency may drop sharply. ) and spraying high-pressure gas to remove the dust accumulated on the carbon fiber 116 of the electric charge unit 110 .

At this time, when removing the dust accumulated on the carbon fiber 116 as described above with reference to FIG. 3 , the carbon fiber 116 of the ion generator 115 is rotated by rotating the high-pressure gas injection unit ( 130) is preferred.

The suction unit 140 is disposed at the rear of the dust collecting unit 120 to suck and remove the fine particles separated from the dust collecting plate 122 by the high-pressure gas ejection unit 130 . As shown in FIG. 1 , the suction unit 140 forms a negative pressure with the hopper 142 disposed to be close to the dust collecting plate 122 at the rear of the dust collecting unit 120 to suck and suck the fine particles. (145) may be included.

At this time, the hopper 142 may have an end formed in a rectangular shape as shown in FIG. 5 , move up, down, left and right, and move to the rear of the dust collecting unit 120 by the high-pressure gas injection unit 130 . particles can be inhaled.

At this time, the injection nozzle 132 of the high-pressure gas injection unit 130 and the hopper 142 of the suction unit 140 are moved to be positioned opposite to each other, so that the fine particles can be sucked over the entire area of the dust collecting unit 120 . have.

An operation of the electric dust collector according to an embodiment of the present invention described with reference to FIGS. 1 to 7 will be described.

When contaminated air is introduced into the inlet of the housing 100 , the fine particles may be charged by ions generated in the charging unit 110 . At this time, ions can be generated by applying a high voltage to the ion generator 115 composed of the carbon fibers 116 strands. have.

At this time, as shown in FIG. 2 , a plurality of ion generators 115 are spaced apart from the flow surface of the air, and each ion generator 115 is separated into a compartment 113 using a diaphragm 112 . It is possible to maximize the charging efficiency of the fine particles. Furthermore, in the present embodiment, the carbon fibers 116 of the ion generator 115 are disposed in a direction opposite to the flow direction of the contaminated air at the rear position of the diaphragm 112 to charge the fine particles.

The charged fine particles are moved to the dust collecting unit 120 at the rear, and the plurality of dust collecting plates 122 are spaced apart in parallel to form a potential difference between the neighboring dust collecting plates 122a and 122b to generate an electrostatic force. may be moved and collected in the dust collecting plate 122 .

As described above, after collecting dust by electric dust collection for a predetermined time, the fine particles collected on the dust collecting plate 122 are removed.

At this time, the voltage applied to the dust collecting plate 122a is stopped, and the high-pressure gas injection unit 130 and the suction unit 140 are positioned in front and rear of the dust collecting unit 120 , respectively. At this time, the high-pressure gas injection unit 130 or the suction unit 140 may be located at the front and the rear of the dust collecting unit 120 at all times, and the high-pressure gas injection unit 130 or the suction unit 140 is the path of the housing. It may be configured to be disposed on one side on the front and rear of the dust collecting unit 120 only when removing the fine particles collected on the dust collecting plate 122 .

The high-pressure gas injection unit 130 injects high-pressure gas toward the space between the dust collecting plates 122 to separate the fine particles collected in the dust collecting plate 122 from the dust collecting plate 122, and forms a flow from the front to the rear. The separated fine particles are moved to the rear of the dust collecting unit 120 . At this time, the suction unit 140 located at the rear of the dust collecting unit 120 sucks the fine particles by negative pressure and processes them.

At this time, the injection nozzle 132 of the high-pressure gas injection unit 130 and the hopper 142 of the suction unit 140 are respectively controlled to move up, down, left, and right so as to be at mutually opposite positions, and the total area of the dust collecting unit 120 (the entire dust collecting plate) (122)) can be treated with fine particles.

In addition, the electrostatic precipitator of the present invention can also remove fine particles accumulated on the carbon fibers 116 of the electric charge unit 110 . When the fine particles are accumulated on the carbon fiber 116 , the charging efficiency is rapidly reduced, so it is necessary to periodically remove the fine particles accumulated on the carbon fiber 116 .

At this time, as shown in FIGS. 7 and 3 , the fixed rod 114 is rotated 180 degrees and the injection nozzle 132 of the high-pressure gas injection unit 130 is also rotated 180 degrees, so that the high-pressure gas injection unit 130 is injected. By disposing the nozzle 132 to face the carbon fiber 116 , and spraying a high-pressure gas from the injection nozzle 132 toward the carbon fiber 116 , the fine particles accumulated on the carbon fiber 116 can be removed. At this time, by moving the spray nozzle 132 up, down, left and right, it is possible to perform a fine dust removal operation for the plurality of ion generators 115 .

Hereinafter, an electric dust collector according to another embodiment of the present invention will be described with reference to FIGS. 8 to 9 .

8 is a view showing a schematic configuration of an electric dust collector according to another embodiment of the present invention, and FIG. 9 shows the dust collector of FIG. 8 .

In the following description, the difference from the above-described embodiment will be mainly described with reference to FIGS. 1 to 7 .

The electric dust collector described above with reference to FIGS. 1 to 7 has been described as a two-stage electric dust collector in which the charging unit 110 and the dust collecting unit 120 are separated according to the flow direction of air, but in this embodiment, the charging unit 110 and It is a single-stage electric dust collector in which the dust collector 120 is not separated.

The configuration in which a plurality of dust collecting plates 122 are arranged in parallel as shown in FIG. 9 is the same as that of the above-described embodiment. A plurality of discharge pins 123 protruding in the form of tips are formed on the edge or outer edge of the hole formed on the plate surface of the dust collecting plate 122 to which the high voltage is applied. Accordingly, when a high voltage is applied to the dust collecting plate 122 , ions can be generated through the discharging pin 123 at the tip. Furthermore, the dust collecting plate 122a to which the high voltage is applied forms a potential difference with the neighboring dust collecting plate 122b to move fine particles charged by ions generated through the discharge pin 123 to the neighboring dust collecting plate 122b to collect dust. let it be

Since the configurations of the high-pressure gas injection unit 130 and the suction unit 140 are the same as those of the above-described embodiment, a detailed description thereof will be omitted.

10 is a graph showing the experimental results of measuring the cleaning efficiency compared to the flow rate of the gas injected from the injection nozzle.

Table 1 below shows the results of testing the dust removal efficiency in the dust collector 120 using the spray nozzle 132 made of an elliptical SUS tube at different flow rates. In this case, the cleaning time was 100 seconds and the same experiment was performed. In addition, a cleaning experiment was performed while simultaneously using two spray nozzles 132 of the same size.

Nozzle type Cleaning time (sec) flow rate (m/s) Removal efficiency (%) Oval 1/2 SUS pipe 100 484.7 93.8 Oval 1/2 SUS tube 100 359.2 92.9 Oval 1/2 SUS tube X2 100 354.4 90.0 Oval 1/2 SUS tube X2 100 316.1 92.9 Oval 1/2 SUS tube 100 287.4 93.8 Oval 1/2 SUS tube X2 100 291.2 90.9 Oval 1/2 SUS tube X2 100 262.9 88.2 Oval 1/2 SUS pipe 100 244.3 92.9 Oval 1/2 SUS tube X2 100 222.7 64.3 Oval 1/2 SUS tube 100 220.3 68.8 Oval 1/2 SUS tube 100 191.6 69.2 Oval 1/2 SUS tube X2 100 71.8 53.3

In the pipe leading from the compressor 134 to the injection nozzle 132, a flow meter was installed at a position 38 cm rearward from the end of the injection nozzle 132 to measure the flow rate, and a pressure gauge was installed at a position 30 cm rearward from the flow meter. The pressure of the injected gas was measured. The flow rate of the injected gas can be obtained using the measured flow rate, pressure, and the cross-sectional area of the injection nozzle 132, and the results of testing the removal efficiency of the dust collector 120 according to the flow rate are shown in Table 1, which is shown in a graph. 10 is shown.

As shown in the graph of FIG. 10 , it can be confirmed that the cleaning efficiency reaches a value close to 90% when the flow rate of the sprayed gas is about 250 m/s or more, regardless of the number of spray nozzles 132 used for cleaning. When cleaning the dust collecting unit in a dry manner according to the present invention, it is understood that the flow rate of the gas discharged from the injection nozzle 132 has a greater effect on the cleaning efficiency than the shape of the injection nozzle 132 and the flow rate of the gas. It is preferred to inject the gas at a speed of at least 250 m/s.

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. Without departing from the gist of the present invention claimed in the claims, it is considered to be within the scope of the claims of the present invention to various extents that can be modified by any person skilled in the art to which the invention pertains.

100: housing
110: lower part
112: diaphragm
113: compartment
114: fixed rod
115: ion generator
116: carbon fiber
118: voltage applying device
120: dust collector
122: dust collecting plate
1221: film layer
1222: coating layer
123: discharge pin
130: high-pressure gas injection unit
132: spray nozzle
134: compressor
140: suction unit
142: Hopper
145: negative pressure forming unit

Claims (12)

In the electric dust collector for collecting the charged fine particles by charging the polluted air,
a dust collector for collecting the charged fine particles by electrostatic force;
a high-pressure gas injection unit for injecting a high-pressure gas from one side of the dust collecting unit toward the fine particles collected in the dust collecting unit; and
and a suction unit for sucking the fine particles separated from the dust collecting unit by the high-pressure gas injection unit at the other side of the dust collecting unit,
The high-pressure gas spraying unit includes a spray nozzle for spraying high-pressure gas,
The suction unit includes a hopper,
The spray nozzle and the hopper are respectively moved so as to face each other with the dust collecting unit interposed therebetween to perform cleaning. The method of claim 1,
In the dust collecting unit, a plurality of dust collecting plates are arranged to be spaced apart in parallel, a potential difference is formed between neighboring dust collecting plates, the high-pressure gas ejection unit is disposed on one side of the dust collecting unit into which the fine particles are introduced, and the suction unit includes the high-pressure gas ejection unit and the An electric dust collector disposed on the other side of the dust collector to face it. delete The method of claim 1,
The high-pressure gas spraying unit includes a spray nozzle for spraying high-pressure gas,
The spray nozzle is an electric dust collector with an angle adjustable up and down or left and right. 3. The method of claim 2,
The dust collecting plate is an electric dust collector formed of a film layer made of a plastic material and a coating layer coated with carbon on the film layer. 3. The method of claim 2,
The dust collecting plate is a first dust collecting plate to which a high voltage is applied and one or more discharge pins formed on the edge of the plate are formed, and a second dust collecting plate for collecting fine particles charged on the plate surface by an electrostatic force formed by a potential difference with the first collecting plate. electric dust collector. The method of claim 1,
The high-pressure gas ejection unit includes a compressor for compressing gas to eject compressed air. The method of claim 1,
An ion generator including a carbon fiber and a voltage applying device for applying a high voltage to the carbon fiber, further comprising a charging unit disposed in front of the dust collector,
The high-pressure gas injection unit is disposed between the charging unit and the dust collecting unit,
The high-pressure gas injection unit is an electric dust collector for removing the fine particles accumulated on the carbon fiber by jetting a high-pressure gas toward the charging unit. 9. The method of claim 8,
A plurality of the ion generator is disposed at least one or more fixed rods spaced apart,
The fixed rod is a rotatable electric dust collector. 10. The method of claim 9,
When charging the fine particles, the ion generator rotates the fixed rod to face the direction in which the contaminated air flows,
An electric dust collector for rotating the fixed rod so that the ion generator faces the rear high-pressure gas injection unit when removing the fine particles accumulated on the carbon fiber. 9. The method of claim 8,
The high-pressure gas spraying unit includes a spray nozzle for spraying high-pressure gas,
The spray nozzle is a rotatable electrostatic precipitator. The method of claim 1,
The flow velocity of the gas injected from the high-pressure gas injection unit is 250 m/s or more.

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