KR101651034B1 - Electric precipitator and air purification system comprising it - Google Patents

Abstract

The present invention relates to an electrostatic precipitator and an air cleaning system including the electrostatic precipitator. The electrostatic precipitator includes a positive electrode to which a positive voltage is applied, a negative electrode to which a negative voltage is applied, and a charging counter electrode to cover one region of each electrode, A negative charge high voltage and a negative high charge voltage are applied to collect the positive and negative charged dusts in the charge part and the charge part to charge the dust particles in the air passing through the charge part by positive and negative charges respectively by forming a corona discharge between the corresponding electrodes, The effective dust collecting area can be doubled as compared with the conventional electrostatic precipitator, and a nonconductive member can be formed on the outer circumferential surface of the conductive member constituting each dust collecting plate It is possible to prevent corrosion, ozone generation, electric shock, and the like.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electrostatic precipitator and an air cleaning system including the electrostatic precipitator,

The present invention relates to an electrostatic precipitator and an air cleaning system including the electrostatic dust precipitator. More particularly, the present invention relates to an air cleaning system including a charge portion capable of charging a dust in the air with a positive charge and a negative charge, The present invention relates to a technique for preventing the corrosion of the dust collecting plate and the generation of ozone by increasing the effective dust collecting area by combining the dust collecting plate with the outer circumferential surface of the dust collecting plate with a nonconductive material.

BACKGROUND OF THE INVENTION Air cleaners using various electrostatic precipitators are used to purify air in an indoor space such as a residential space or a car interior. Most electrostatic dust collectors consist of a charge part for charging dust particles in the air and a dust collecting part for collecting the charged dust particles. The dust collecting part is composed of a dust collecting plate and a dust collecting plate.

Such an electrostatic precipitator is disclosed in Japanese Laid-Open Patent Application No. 10-2005-0068043 entitled " Electrostatic Precipitator and Air Purifier Including That Electrostatic Precipitator ".

However, in the conventional electrostatic precipitator, dust particles are collected only on the dust collecting plate of the dust collecting unit, and the dust collecting plate plays the role of generating an electrical repulsive force to push the charged dust particles toward the dust collecting plate and does not collect dust. There is a problem that the effective dust collection area, which is the area where actual active dust collection is performed, is limited.

In addition, ozone is generated when the ions are generated through the corona discharge in the charge part, and the dust collecting plate and the dust collecting counterpart are made of metal members, causing problems such as electric sparking, ozone generation, and electric shock due to corrosion and corrosion of metal.

According to an embodiment of the present invention, dust particles in air passing through a charge unit are efficiently charged into a positive charge and a negative charge, respectively, and the positive and negative charges The charging rate and the charging method of the present invention are provided.

According to an embodiment of the present invention, there is provided a positive electrode collecting plate and a negative electrode collecting plate for simultaneously collecting positive and negative charges generated in a charge portion in a dust collecting portion when removing dust in the air, The collecting plate being collecting and performing a role of a dust collecting plate for generating an electrical repulsive force toward the collecting plate, all the collecting plates actively collecting the charged dust particles. In this way, it is an object of the present invention to provide an air collecting apparatus which can increase the effective dust collecting area of the dust collecting unit twice as much as the conventional dust collecting structure of the conventional electrostatic precipitator.

The dust collecting part of the conventional electrostatic precipitator is composed of a metal member and collects the charges generated in the charge part. However, it is not easy to clean the dust collected on the surface of the metal member, and ozone may be generated due to high voltage applied between the dust collecting plate and the dust collecting plate. Particularly, since the high voltage is applied to the dust collecting part, it also has a risk of electric shock. According to an embodiment of the present invention, there is provided an electrostatic precipitator capable of solving the above problems by forming the dust collecting plates of the dust collecting unit formed of the conductive member into a shape in which a non-conductive member is coupled to the outer circumferential surface thereof .

According to an embodiment of the present invention, the dust collecting plates of the dust collecting unit may be formed of conductive plastic instead of the metal member. In addition, it is possible to provide an electrostatic precipitator which can reduce the weight and production cost by making the charging counter electrode a conductive plastic, and solve problems such as corrosion and ozone generated when the metal plate is constructed.

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

A high voltage generator for generating positive high voltage and negative high voltage;

A negative electrode to which a positive high voltage is applied, a negative electrode to which a high voltage of a negative electrode is applied, and a charge corresponding electrode to cover one region of each of the electrodes, and a corona discharge is formed between the electrodes, A charge portion for charging the dust in the air into a positive charge and a negative charge, respectively;

A negative electrode collecting plate to which the negative high voltage is applied in order to collect positive charges generated in the charge unit by electrostatic force and a positive electrode collecting plate to which the positive high voltage is applied in order to collect negative charges generated in the charge unit, A dust collection unit in which the cathode collection plates are alternately arranged;

And the dust collecting unit is installed in a direction perpendicular to a direction in which dust particles in the air are sucked into the load unit.

According to an embodiment of the present invention, the positive electrode collector and the negative electrode collector plate are formed by combining a conductive member and a nonconductive member on an outer circumferential surface of the conductive member.

According to an embodiment of the present invention, the conductive member constituting the charging counter electrode may be formed of a conductive plastic.

According to an embodiment of the present invention, the conductive member of the cathode collection plate and the cathode collection plate may be made of conductive plastic.

According to an embodiment of the present invention, the conductive member and the nonconductive member of the dust collecting plate may be provided as a bakelite.

According to an embodiment of the present invention, the charge corresponding electrode may have a shape of a rectangular ring spaced apart from the electrode and provided with a wire. At this time, the discharge electrode is provided in the form of a rod.

The electrostatic precipitator according to the present invention and the air purifier according to the present invention charge the dust in the air flowing into the charge unit into positive and negative charges and discharge the same to the dust collecting unit. Positive charge is collected on the negative electrode collector plate, negative charge is collected on the positive electrode collector plate So that the effective dust collecting area of the dust collecting part can be doubled compared with that of the conventional dust collecting part of the conventional electrostatic precipitator.

In addition, in the present invention, by combining a non-conductive material on the outer circumferential surface of the dust collecting plate, it is possible to solve the problem of electric spark caused by corrosion and corrosion, ozone generation, difficulty of cleaning pollutants on the surface of the dust collecting part, .

In addition, according to the embodiment of the present invention, the charging counter electrode of the charge unit is made of a conductive plastic to increase the productivity, lower the unit price, and protect the electrostatic precipitator from corrosion and electric spark.

According to an embodiment of the present invention, the conductive member and the non-conductive member constituting the dust collecting plate may be made of a material called bakelite to increase the productivity.

1 is a schematic view showing a conventional electrostatic precipitator;
2 is a schematic view showing a configuration of an electrostatic precipitator according to the present invention;
3 is a schematic view of a dust collection plate, according to an embodiment of the present invention;
4 is a schematic illustration of a load, in accordance with one embodiment of the present invention.
5 is a perspective view of a lower part according to an embodiment of the present invention;
6 is a schematic diagram illustrating an electrostatic precipitator, according to one embodiment of the present invention.
7 is an exploded perspective view of an air cleaning system to which an embodiment of the present invention is applied.

1 is a schematic view showing a conventional electrostatic precipitator. The electrostatic precipitator of FIG. 1 comprises a charge unit 400 and a dust collecting unit 300. The charge unit 400 includes a wire discharge electrode 420 having a wire shape and a charge counter electrode 410 disposed at a height spaced apart from the wire discharge electrode 420 by a predetermined distance. When a high voltage is applied to the wire discharge electrode 420 and the charge corresponding electrode 410, the dust particles in the air passing through the charge unit 400 are charged by the corona discharge. At this time, the polarity of the charged particles is the same as the polarity of the voltage applied to the wire discharge electrode 420. Accordingly, the charges generated in the charge unit 400 flow into the dust collecting unit while forming a single polarity. The dust collecting unit 300 includes a dust collecting plate 320 and a dust collecting plate 310. The dust collecting plate 310 generates an electrical repulsive force to push charges to the dust collecting plate 320. [ According to this configuration, the charges charged in the charge portion are collected at the dust collecting plate 320 and the charges are not collected at the dust collecting counter 310.

2 shows a schematic view of an electrostatic precipitator according to the invention. The electrostatic precipitator 10 includes a charge unit 200 and a dust collecting unit 100. The charge unit 200 includes discharge electrodes 210 and 230 and charge corresponding poles 220 and 240. The discharge electrode has a shape of a bar and is composed of a bipolar electrode 210 to which a positive high voltage is applied and a negative electrode 230 to which a negative high voltage is applied and a charge corresponding electrode to correspond to both the positive electrode 210 and the negative electrode 230 And a negative polarity corresponding electrode 240 for negative polarity. The discharge electrodes 210 and 230 react with the grounded charge corresponding poles 220 and 240 to generate a corona discharge to charge the dust particles in the air passing through the charge unit 200. At this time, the dust particles passing through the two electrodes 210 are charged to the anode, and the dust particles passing through the electrode 230 are charged to the cathode. The charge responsive poles 220 and 240 may be embodied in any shape capable of forming an electrostatic field with the electrodes, such as a cylindrical or rectangular housing.

The discharge electrodes 210 and 230 may be formed of a needle-shaped metal having a pointed end, a carbon fiber bundle, a metal fiber bundle, a copper bundle, or the like. The diameter of a carbon fiber or a metal fiber is several micrometers or less, and a bundle of metal fibers or a bundle of carbon fibers is formed by collecting a short metal fiber or carbon fiber from hundreds to tens of thousands of strands. Copper bundles consist of a bundle of short copper wire with a diameter of several hundred micrometers or less. These bundles are fixed to the end of the high voltage line and have a shape of a rod. When a high voltage is applied, the bundle reacts with the charging counter electrodes 220 and 240 to generate a corona discharge.

Charges generated in the charge unit 200 flow into the dust collecting unit 100. The positive charge is a positive channel collected in the negative electrode collector plate 120 to which a negative high voltage is applied and the negative charge generated in the charge unit is applied to a positive electrode collector plate A dual channel is formed while a cathode channel to be collected in the cathode 110 is formed.

A strong electrostatic field due to a high voltage is formed between the positive electrode collector plate 110 and the negative electrode collector plate 120. Each of the collecting plates 110 and 120 is a collecting plate for actively collecting charges having a polarity opposite to the polarity of the voltage applied to the collecting plate, And serves as a dust-collecting counterpart that forms an electrical repulsive force with respect to charges having a polarity opposite to that of the collected charges toward the dust collecting plate. Therefore, since all the dust collecting plates constituting the dust collecting unit 100 can collect the dust, the effective dust collecting area is doubled as compared with the dust collecting unit of the conventional electrostatic precipitator having the same structure. This reduces the load on the dust collecting of each dust collecting plate, which increases the maintenance cycle of cleaning and the like, and reduces the maintenance cost. According to an embodiment of the present invention, the charging counter electrode may be formed of a conductive plastic.

3 is a schematic view showing the structure of the dust collecting plates 110 and 120 according to an embodiment of the present invention. The dust collecting plates 110 and 120 may be configured to include a conductive member 111 and a nonconductive member 112 on the outer circumferential surface thereof. In such a structure, when the conductive member 111 of the dust collecting plate is made of metal, since the metal is not exposed to the air, there are problems such as the occurrence of electric spark due to corrosion of metal, corrosion due to high voltage, generation of ozone between metal dust collecting plates Can be solved. The dipoles of the nonconductive member are aligned in a specific direction due to the electrostatic field due to the high voltage applied to the conductive member 111, even though each of the dust collecting plates is coupled to the outer circumferential surface thereof with a nonconductive member. By the aligned dipole, an electrostatic field can be formed on the surface of the nonconductive member 112, so that the charged dust can be collected by the electrostatic force.

According to an embodiment of the present invention, the conductive member 111 may be formed of conductive plastic. In addition, a conductive bakelite having a conductive material added to the bakelite may be used as the conductive member 111. The bakelite has a small specific gravity, but has excellent mechanical strength and good processability. In addition, the conductive plastic is lightweight, can prevent corrosion, can prevent electric sparks that may occur between the dust collecting plates, and is advantageous in mass production because of its good moldability.

According to an embodiment of the present invention, the nonconductive member 112 may be formed of bake light, polycarbonate (PC), polypropylene (PP), polyethylene (PE), or the like.

In particular, when the conductive member 111 and the nonconductive member 112 are provided as a bakelite to form a dust collecting plate, a conductive bakelite is inserted between two nonconductive bakelites, The manufacturing process is simple, and the manufacturing cost can be lowered.

4 is a schematic view of a load according to one embodiment of the present invention. 4 includes a wire discharge electrode 210a and a charge corresponding electrode 220a disposed at a height spaced apart from the wire discharge electrode 210a by a predetermined distance. At this time, a high voltage is applied to the wire discharge electrode 210a, and the charge corresponding electrode 220a is grounded. The wire discharging electrode 210a reacts with the charging counter electrode 220a to generate a corona discharge to charge the dust particles in the air passing through the charging unit. The wire discharge electrode may be formed of a metal such as tungsten or copper.

FIG. 5 is a perspective view of a lower part according to an embodiment of the present invention. FIG. The charging counter electrode 220b has the shape of a rectangular ring made of wire. At this time, the discharge electrode 210b has a shape of a bar, is spaced apart from the charge corresponding electrode 220b by a certain distance, is installed at the center of the charge corresponding electrode 220b, and reacts with the discharge electrode 210b to generate a corona discharge. The electrostatic field generated in the discharge electrode 210b and the charge corresponding electrode 220b is concentrated in the loop of the charge corresponding electrode 220b, which is advantageous in increasing the charge efficiency. In order to increase the charge capacity of the charge unit, several charge correspondence poles 220b are continuously arranged to have a grid shape as a whole, and a discharge electrode 210b is provided at the center of each grid shape. The interval and the position between the charge corresponding electrode 220b and the electrode 210b are determined in consideration of the magnitude of the voltage applied to the electrode. The charging counter electrode 220b may be formed in a ring shape of various shapes such as a circle as well as a square shape.

6 is a perspective view illustrating a configuration of an electrostatic precipitator according to an embodiment of the present invention. Unlike the side suction method shown in FIG. 2, the charging part 200a is disposed directly downstream of the dust collecting part 100a and is a bottom suction type in which air is introduced. The bottom suction type electrostatic precipitator 10a includes a charging unit 200a including a positive electrode 210a, a negative electrode 230a and a grounded charge counter electrode 250. The bottom suction type electrostatic precipitator 10a includes a positive electrode collector plate 110a and a negative electrode collector plate 120a. And a dust collecting portion 100a. The dust particles in the air flowing into the charging portion 200a are respectively charged with positive ions and negative ions, and the charged dust particles are collected in the dust collecting portion 100a.

The cathode electrode 230a of the bottom suction type electrostatic precipitator 10a is placed on the same plane as the anode collector plate 110a and both electrodes 210a are placed on the same plane as the cathode collector plate 120a. Like the side suction type electrostatic precipitator 10, the bottom suction type electrostatic precipitator 10a forms a dual channel for collecting a positive charge on the cathode collection plate 120a and a negative charge on the anode collection plate 110a. Like the side suction type electrostatic precipitator 10, each of the dust collecting plates 110a and 120a does not only function as a dust collecting plate for collecting the electric charges, but also collects dust that gives an electric repulsive force toward the adjacent dust collecting plate So that all the dust collecting plates constituting the dust collecting unit 100a can collect dust particles.

7 is an exploded perspective view of an air cleaning system according to an embodiment of the present invention. The dust particles in the air flow along the flow path created by the fan 510 mounted on the airflow 500 of the air cleaning system. The anode high voltage generated in the high voltage generator 600 is applied to the anode electrode 310 and the anode collector plate 410 while the cathode high voltage is applied to the cathode electrode 340 and the cathode collector plate 420 respectively.

Dust particles in the air flow through the air intake port 361 on the side of the charge unit 300 and the charged particles are discharged to the outside through the corona Discharges and is charged to positive and negative charges, respectively. The positive electrode 310 and the negative electrode 340 have a rod shape and are fixed to the electrode fixing portion 320. Each of the charge collectors 430 is provided with a positive electrode collector plate 410 and a negative collector plate 420 alternately arranged at regular intervals and a dust collecting unit 400 installed at a position perpendicular to the flow direction of air flowing into the charge unit 300 ). At this time, the positive charges are collected on the cathode collection plate 420 and the negative charges are collected on the anode collection plate 410, respectively.

Since the cross sectional area of the side suction port 361 does not necessarily coincide with the cross sectional area of the dust suction inlet 431 in the case of the side suction type, a bottom portion made up of one double electrode 310 on one side of the downstream side of the dust collector 120 And one moon electrode 340 on the other side may be provided to form a minimum load part, and a plurality of bipolar electrodes 310 and a plurality of moon electrodes 340 may be formed according to the size of the air cleaning system. 340 may be provided. In the case of the side suction type as described above, it has an advantage that the bottom part can be installed in various shapes and sizes.

The air cleaning system according to an embodiment of the present invention may further include a pre-filter provided before the outside air is introduced into the charging device. The pre-filter may be formed in front of the charging unit 300 in the air flow direction to primarily adsorb the dust contained in the outside air introduced into the air cleaning system.

The embodiments of the electrostatic precipitator of the present invention described above are merely illustrative and those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention . Therefore, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. It is also to be understood that the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: dust collecting part 200:
110: Positive electrode collecting plate 110: Negative electrode collecting plate
210: Positive electrode 230: Negative electrode
220: Positive discharge counter electrode 240: Negative discharge counter electrode
111: conductive member 112: nonconductive member
210a: a wire discharge electrode 220a: a charge corresponding pole

Claims (8)

The charging electrodes 220 and 240 are provided to cover the positive electrode 210 and the negative electrode 230 so as to cover one area of each electrode. The electrodes act on the charging counter electrode to generate a discharge, A charge unit 200 for charging the dust particles in the positive charge and the negative charge, respectively;
A dust collection unit 100 including a cathode collection plate 120 for collecting the positive charges and a cathode collection plate 110 for collecting the negative charges, the cathode collection plate and the cathode collection plate being alternately arranged;
And a conductive bakelite formed by mixing conductive materials as the conductive members of the anode collector plate 110 and the cathode collector plate 120. A conductive member 111 made of conductive bakelite is provided on both outer peripheral surfaces of the conductive member 111 with a non- 112 are coupled,
Conductive member 112 as a non-conductive bakelite,
Wherein each of the conductive bakelites is inserted between two nonconductive bakelites and thermally compressed to form one plate-shaped dust collecting plate.

delete delete delete delete The method according to claim 1,
The charging counter electrodes 220 and 240 are provided in the shape of a rectangular ring 220b formed by a wire,
Wherein the positive electrode (210) and the negative electrode (230) are formed of an electrode (210b) having a rod shape.
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