Electrification apparatus for electric dust collection and control method therefor

1. An electrification apparatus for electric dust collection comprising:

a frame;

a conductive microfiber disposed at the frame and configured to discharge a high voltage to air to thereby generate ions in the air;

conductive plates that surround the conductive microfiber, that are connected to a ground electrode, and that are configured to generate a potential difference with the conductive microfiber; and

a ground connector that is disposed between the conductive microfiber and one of the conductive plates and that is configured to selectively connect to the ground electrode,

wherein the ground connector is configured to:

disconnect from the ground electrode based on the conductive microfiber discharging the high voltage to the air, and

connect to the ground electrode based on the conductive microfiber not discharging the high voltage to the air.

2. The electrification apparatus for electric dust collection according to claim 1 , wherein the conductive plates define an electrification space in which the conductive microfiber is positioned at a center thereof and in which an electric field is generated, and

wherein the ground connector is disposed in the electrification space.

3. The electrification apparatus for electric dust collection according to claim 2 , wherein the conductive plates are provided in a rectangular frame shape, and

wherein the electrification space is a rectangular columnar shaped space.

4. The electrification apparatus for electric dust collection according to claim 1 , wherein the frame includes:

a main body frame in which the conductive plates are installed; and

an installation frame that extends from the main body frame and in which the conductive microfiber is installed, and

wherein the ground connector is in contact with the installation frame.

5. The electrification apparatus for electric dust collection according to claim 4 , wherein the ground connector includes a ground ring that surrounds an outside of the conductive microfiber and that is disposed between the installation frame and the conductive microfiber.

6. The electrification apparatus for electric dust collection according to claim 5 , wherein the ground ring is one of a plurality of ground rings that divide the conductive microfiber into a plurality of bundles and that surround the plurality of bundles, respectively.

7. The electrification apparatus for electric dust collection according to claim 4 , wherein the ground connector includes a ground sheet that is in contact with a side of the installation frame and that defines a plurality of openings.

8. The electrification apparatus for electric dust collection according to claim 7 , wherein the ground sheet includes a ground sheet end that defines a boundary of the ground sheet, the ground sheet defining a through-hole that is opened circularly about the conductive microfiber.

9. The electrification apparatus for electric dust collection according to claim 8 , wherein the ground sheet end defines a rectangular shape corresponding to one of the conductive plates and is spaced apart from the conductive plates.

10. The electrification apparatus for electric dust collection according to claim 4 , wherein the ground connector includes a ground coil that surrounds an outside of the installation frame and extends along the installation frame.

11. The electrification apparatus for electric dust collection according to claim 1 , further comprising:

a voltage generator configured to generate the high voltage and to supply the high voltage to the conductive microfiber.

12. The electrification apparatus for electric dust collection according to claim 11 , further comprising:

a plurality of switches connected to the voltage generator and the ground electrode, respectively.

13. The electrification apparatus for electric dust collection according to claim 12 , wherein the plurality of switches comprise:

a first switch connected to the voltage generator; and

a second switch, a third switch, and a fourth switch that are connected to the ground electrode.

14. The electrification apparatus for electric dust collection according to claim 13 , wherein the conductive microfiber is configured to:

discharge the high voltage to the air based on the first and third switches being turned on and the second and fourth switches being turned off; and

stop discharging the high voltage to the air based on the third and fourth switches being turned on and the first and second switches being turned off.