KR100710494B1 - Electric dust collector using X-ray irradiation - Google Patents

Abstract

The present invention uses X-rays to irradiate X-rays between the dust collector plate subjected to the electric field to photoionize air containing contaminants such as fine dust or harmful substances, thereby improving dust collection efficiency of fine dust or harmful substances. It relates to an electrostatic precipitator.

An electrostatic precipitator using an X-ray according to the present invention includes: at least two dust collecting plates disposed to face each other, in which contaminants charged with opposite charges are absorbed according to polarity; A power supply for applying a voltage to the dust collecting plates to charge the dust collecting plates; And an X-ray tube arranged to irradiate X-rays between the dust collecting plates so as to ionize air containing contaminants between the dust collecting plates.

Dust collection, Electrostatic precipitating, Electrostatic precipitator, X-ray, X-ray tube, Bipolar transmission X-ray tube

Description

Electric dust collector using X-ray irradiation

1 is a schematic configuration diagram of a conventional electrostatic precipitator.

2 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to the first embodiment of the present invention.

3A is a schematic diagram of a general X-ray tube used in the electrostatic precipitator of FIG. 2.

FIG. 3B is a schematic configuration diagram of a bipolar transmissive X-ray tube used in the electrostatic precipitator of FIG. 2.

4 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a second embodiment of the present invention.

5 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a third embodiment of the present invention.

6 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a fourth embodiment of the present invention.

7 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a fifth embodiment of the present invention.

8 is a schematic view illustrating a cleaning method of an electrostatic precipitator using X-rays according to the present invention.

The present invention relates to an electrostatic precipitator, and more particularly, by irradiating X-rays between dust collecting plates subjected to an electric field to photoionize air containing contaminants such as fine dust or harmful substances, The present invention relates to an electrostatic precipitator using X-rays for improving dust collection efficiency.

At present, the internal air of houses, offices, recreation rooms, car garages, car tunnels or factories is widely used as a purification device for purifying harmful particles such as fine particles in the form of suspended particles or harmful gases and smoke. .

1 is a schematic configuration diagram of a conventional electrostatic precipitator.

As shown in FIG. 1, the conventional electrostatic precipitator 10 includes a charging unit 1 and a dust collecting unit 2. The charging unit 1 has a structure of the line 4 and the plate electrodes 3a and 3b, and a direct current high voltage is applied between the line 4 and the plate electrodes 3a and 3b to generate a corona discharge. On the other hand, the dust collecting part 2 has the structure of the parallel plate electrodes 5a, 5b, and 6, and a DC high voltage is applied between these parallel plate electrodes 5a, 5b, and 6, and an electrostatic field is formed. In the electrostatic precipitator 10 having such a configuration, fine dust or harmful substances and the like are charged unipolarly in the charging unit 1 and are collected by the electrostatic fields of the dust collecting unit 2 to the dust collecting electrodes 5a and 5b.

As a method of improving the conventional electrostatic precipitator 10, Korean Patent No. 253628 discloses a method of remodeling the charging unit and the dust collector, and Korean Patent Laid-Open Publication No. 2004-12581 discloses an AC high voltage instead of a DC high voltage. A method of using is disclosed.

However, since conventional water using corona discharge affects ionization by corona discharge, it is difficult to wash the dust collecting plate of the dust collecting part.

In addition, the conventional electrostatic precipitator using the corona discharge has a problem that frequent ion balance adjustment has to be made because the balance of cations and anions generated by ozone (O ₃ ) generated at the time of corona discharge is often changed.

On the other hand, US Pat. No. 3,948,625 discloses a contaminant dust collector that improves dust collection efficiency by ionizing pollutants in the air using radiation in a method different from corona discharge.

However, since the dust collector disclosed in US Patent No. 3,948,625 uses a radioisotope, there is a problem in that radiation which is very harmful to a human body is generated.

The technical problem of the present invention for solving the above problems is to provide an electrostatic precipitator having high dust collection efficiency of pollutants such as fine dust or harmful substances, and easy to wash water.

In order to solve the above technical problem, the electrostatic precipitator using an X-ray according to the present invention is at least two dust collecting plates disposed to face each other, the pollutants charged with the opposite charge according to the polarity; A power supply for applying a voltage to the dust collecting plates to charge the dust collecting plates; And an X-ray tube arranged to irradiate X-rays between the dust collecting plates so as to ionize air containing contaminants between the dust collecting plates.

In a preferred embodiment, at least one of the collector plates of the X-ray electrostatic precipitator according to the present invention preferably has protrusions formed in directions in which the collector plates face each other.

Further, in a preferred embodiment, the X-ray tube of the electrostatic precipitator using the X-rays according to the present invention is preferably an anode-transmitting X-ray tube.

In another preferred embodiment, the X-ray tube of the electrostatic precipitator using the X-rays according to the present invention is preferably located outside of the outermost dust collecting plate.

In another preferred embodiment, the X-ray tube of the X-ray electrostatic precipitator according to the present invention is preferably located in the open side direction of the space between the dust collecting plates.

Hereinafter, an electrostatic precipitator using X-rays according to the present invention will be described in detail with reference to the drawings.

2 is a schematic configuration diagram of an electrostatic precipitator using an X-ray according to a first embodiment of the present invention, Figure 3a is a schematic configuration diagram of a general X-ray tube used in the electrostatic precipitator of Figure 2, FIG. 3B is a schematic configuration diagram of a bipolar transmissive X-ray tube used in the electrostatic precipitator of FIG. 2.

As shown in FIG. 2, the electrostatic precipitator 100 using the X-ray according to the first embodiment of the present invention includes dust collecting plates 111 and 112, a power supply unit 120, and an X-ray tube 130. It is done by

The dust collecting plates 111 and 112 have a pair of parallel plate electrode structures arranged to face each other at appropriate intervals, and a DC or AC high voltage is applied by the power supply device 120. Depending on the polarity of the dust collecting plates 111 and 112, contaminants such as fine dust or toxic substances charged with opposite charges are adsorbed to the dust collecting plates 111 and 112 by Coulomb's force.

The power supply 120 has both poles connected to the dust collecting plates 111 and 112, respectively, to apply a high voltage, and a DC or AC power supply 120 may be used. The power supply device 120 preferably uses a voltage of about 10 kV to 12 kV. Here, when the AC power supply device is used as the power supply device 120, the pollutants adsorbed on the dust collection plates 111 and 112 are separated from the dust collection plates 111 and 112 together with the flow of air than when the AC power supply device is used as the DC power supply device. There is an advantage that can reduce the re-scattering phenomenon.

The X-ray tube 130 irradiates X-rays between the dust collecting plates 111 and 112 to photoionize air containing contaminants with cations or anions, and the X-ray tube 130 is shown in FIGS. 3A and 3B, respectively. The general X-ray tube 131 and the bipolar X-ray tube 132 shown may be used. Among these, it is more preferable to use the anode-transmissive X-ray tube 132 having a large radiation angle of the emitted X-rays.

As shown in FIG. 3A, a general X-ray tube 131 includes a power supply unit 131a, a filament power source 131b, and a vacuum tube 131c, and the vacuum tube 131c includes a filament 131d, a target 131e, and A window 131f is provided. In the general X-ray tube 131, electrons supplied by the power supply unit 131a and the filament power source 131b are emitted from the filament 131d, and the emitted electrons are accelerated by the high voltage in the vacuum tube 131c to target the target ( 131e). At this time, X-rays generated by the deceleration of the electron velocity are emitted to the outside through the window 131f. The general X-ray tube 131 has an advantage of emitting X-rays having good transmittance for objects such as dust collecting plates 111 and 112, but has a disadvantage in that the emission angle of the emitted X-rays is narrow and the efficiency is low.

As shown in FIG. 3B, the anode-transmitting X-ray tube 132 includes a power supply unit 132a, a filament power source 132b, and a vacuum tube 132c, and the vacuum tube 132c includes a filament 132d and a positive plate 132e. It is provided. In the anode-transmissive X-ray tube 132, electrons supplied by the power supply unit 132a and the filament power source 132b are emitted from the filament 132d, and the emitted electrons are accelerated by the high voltage in the vacuum tube 132c to be a positive electrode plate. It collides with 132e. At this time, X-rays generated by the deceleration of the electron velocity are emitted to the outside through the positive electrode plate 132e. In the embodiment, it is preferable to use a thin coating of a metal such as tungsten on Be as the anode plate 132e of the anode-transmissive X-ray tube 132, in which case a soft X-ray having a wavelength of about 1.2 GHz to 3 GHz soft X-rays are emitted to the outside. The bipolar transmissive X-ray tube 132 has an advantage that the radiation angle of the X-rays emitted is wider than the general X-ray tube 131 and the efficiency is excellent.

Referring back to FIG. 2, the electrostatic precipitator 100 using the X-rays according to the present invention may be used by attaching the positive electrode plate 132e of the positive electrode transmissive X-ray tube 132 to the positive electrode dust collecting plate 112. In this case, the anode power of the cathode dust collecting plate 112 is used as the anode power of the anode collecting X-ray tube 130 without separately configuring the anode power of the anode collecting plate 112 and the anode power of the anode transparent X-ray tube 132. Since it can be used as, the configuration of the electrostatic precipitator 100 can be simplified, and there is an advantage of reducing the manufacturing price.

4 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a second embodiment of the present invention.

As shown in FIG. 4, the electrostatic precipitator 200 using the X-rays according to the second embodiment of the present invention includes dust collecting plates 211 and 212, a power supply device (not shown), and an X-ray tube 230. It includes. Here, the X-ray tube 230 is located in the open side direction of the space between the pair of dust collecting plates 211 and 212.

5 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a third embodiment of the present invention.

As shown in FIG. 5, the electrostatic precipitator 300 using the X-ray according to the third embodiment of the present invention includes a dust collecting plate 311, 312, 313, 314, a power supply (not shown), and an X- A conduit 330 is included. Here, the X-ray tube 330 is located in the open side direction of the space between the two pairs of collecting plates 311, 312, 313, and 314, and the two pairs of collecting plates 311, 312, 313, and 314 improve dust collection efficiency. The polarity is alternately arranged so as to make each other.

6 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a fourth embodiment of the present invention.

As shown in FIG. 6, the electrostatic precipitator 400 using the X-ray according to the fourth embodiment of the present invention includes a dust collecting plate 411, 412, 413, 414, a power supply (not shown), and an X- A conduit 430 is included. Here, the X-ray tube 430 is located outside the outermost dust collecting plate 414 of the two pairs of dust collecting plates 411, 412, 413, 414, and the two pairs of dust collecting plates 411, 412, 413, 414 are collected. The polarities are alternately arranged with each other to improve the efficiency. In addition, it is preferable that the dust collecting plates 411, 412, 413, 414 use an aluminum dust collecting plate so that the transmission efficiency of X-rays is high.

In the third and fourth embodiments shown in FIGS. 5 and 6, respectively, the number of X-rays emitted from the X-ray tube 330 or 430 is large, and the number of dust collecting plates 311, 312, 313, 314 or 411, Since the 412, 413 and 414 must be transmitted or irradiated, the voltage of the X-ray tube 330 or 430 of the electrostatic precipitator 300 or 400 is preferably several tens of kV or more.

At this time, when the carbon plate having excellent X-ray transmittance and excellent electrical conductivity is used as the dust collecting plate 311, 312, 313, 314 or 411, 412, 413, 414, the voltage of the X-ray tube 330 or 430 can be lowered. have. In addition, when the porous carbon plate is used as the dust collecting plates 311, 312, 313, 314 or 411, 412, 413, 414, the odor or harmful polymers can be prevented from falling off again after being electrically adsorbed, thereby increasing efficiency.

7 is a schematic configuration diagram of an electrostatic precipitator using X-rays according to a fifth embodiment of the present invention.

As shown in FIG. 7, the electrostatic precipitator 500 using the X-rays according to the fifth embodiment of the present invention includes dust collecting plates 511 and 512, a power supply device (not shown), and an X-ray tube 530. It includes. Here, at least one of the dust collecting plates 511 and 512 is formed with a plurality of protrusions 511a and 512a in a direction facing each other. In this case, the electrostatic precipitator 500 increases the dust collecting area by the protrusions 511a and 512a, and the flow of air passing between the dust collecting plates 511 and 512 is delayed by the protrusions 511a and 512a and ionized. This has the advantage of increasing the chance of dust collection.

In the above-described embodiments, the electrostatic precipitator using the X-rays according to the present invention includes a pair or two pairs of dust collecting plates, but is not limited thereto, and constitutes an electrostatic precipitating device having three or five or more dust collecting plates. It will be apparent to one of ordinary skill in the art that the practice does not depart from the scope of the present invention.

8 is a schematic view illustrating a cleaning method of an electrostatic precipitator using X-rays according to the present invention.

As illustrated in FIG. 8, the dust collecting plates 611 and 612 of the electrostatic precipitator 600 according to the present invention may wash the collected contaminants with water 641 flowing through the water pipe 640.

Although the present invention has been described above, this is only one embodiment, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the technical spirit of the present invention. . However, it will be confirmed through the claims that such changes and modifications fall within the scope of the present invention.

As described above, the electrostatic precipitator using X-rays ionizes air containing contaminants by using X-rays, thus eliminating the need for expensive high-voltage devices and facilitating water washing of the dust collecting plate. have.

In addition, the electrostatic precipitator using the X-rays according to the present invention irradiates X-rays to a large area so as to ionize air containing contaminants, and thus also has the effect of collecting pollutants with high efficiency over a large area. .

Claims (9)

At least two dust collecting plates arranged to face each other, wherein contaminants charged with opposite charges are adsorbed according to polarity; A power supply for applying a voltage to the dust collecting plates to charge the dust collecting plates; And And an X-ray tube arranged to irradiate X-rays between the dust collecting plates so as to ionize air containing contaminants between the dust collecting plates. The method of claim 1, At least one of the dust collecting plate is an electrostatic precipitator using an X-ray, characterized in that the protrusions are formed in a direction in which the dust collecting plate is opposed to each other. The method of claim 1, The X-ray tube is an electrostatic precipitator using an X-ray, characterized in that the bipolar transmission X-ray tube. The method of claim 3, wherein The anode plate of the anode-transmissive X-ray tube is attached to the dust collecting plate charged with the outermost anode of the dust collecting plate, The positive electrode power source of the positive electrode X-ray tube is connected to the positive electrode power source of the dust collector plate charged with the outermost positive electrode. The method of claim 1, The X-ray tube is an electrostatic precipitator using an X-ray, characterized in that located on the outside of the outermost dust collecting plate of the dust collecting plate. The method of claim 1, The X-ray tube is an electrostatic precipitator using the X-rays, characterized in that located in the open side direction of the space between the dust collecting plate. The method of claim 1, The dust collecting plate is an electrostatic precipitator using X-rays, characterized in that the carbon plate. The method of claim 7, wherein The carbon plate is an electrostatic precipitator using X-rays, characterized in that the porous carbon plate. The method of claim 1, And, when the dust collecting plates are contaminated, the contaminated dust collecting plate is washed by flowing water into the contaminating dust collecting plate.

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