Electrical dust-collecting filter
An electrical dust-collecting filter is provided. The electrical dust-collecting filter includes a dust-collecting unit having a dust-collecting body and dust-collecting electrodes configured to generate an electrical field in the dust-collecting body. The dust-collecting body has a plurality of air channels laterally formed therethrough and discharge apertures formed in upper and lower surfaces thereof at inlets of the plurality of air channels. A discharge unit is integrally formed with the dust-collecting unit at the inlets of the plurality of air channels to facilitate corona discharge in air introduced into the inlets of the plurality of air channels.
1. An electrical dust-collecting filter, comprising:
a dust-collecting unit including a dust-collecting body and dust-collecting electrodes configured to generate an electrical field in the dust-collecting body, the dust-collecting body having a plurality of air channels defined by a plurality of through holes laterally formed to pass through the dust-collecting body and discharge apertures formed in upper and lower surfaces thereof at inlets of the plurality of air channels; and
a discharge unit, integrally formed with the dust-collecting unit at the inlets of the plurality of air channels to cause corona discharge in air introduced into the inlets of the plurality of air channels.
2. The electrical dust-collecting filter of claim 1 , wherein the dust-collecting body is made of an insulative material and interior wall surfaces of the air channels serve as dust-collecting surfaces on which dust particles are collected.
3. The electrical dust-collecting filter of claim 1 , wherein the discharge unit includes a first discharge electrode and a second discharge electrode, respectively attached to lower and upper portions of the air channels disposed adjacent to each other through the discharge apertures, thereby causing the corona discharge in air introduced into the inlets of the air channels.
4. The electrical dust-collecting filter of claim 3 , wherein the first discharge electrode is connected to a positive pole of a voltage generator, and the second discharge electrode is connected to a negative pole of the voltage generator.
5. The electrical dust-collecting filter of claim 3 , wherein the second discharge electrode includes discharge tips where voltage discharge from the first discharge electrode occurs.
6. The electrical dust-collecting filter of claim 1 , wherein the dust-collecting electrodes include a first dust-collecting electrode and a second dust-collecting electrode, which are respectively attached to lower and upper surfaces of the dust-collecting body to collect dust particles, which are ionized by the corona discharge, on wall surfaces of the air channels using an electric field.
7. The electrical dust-collecting filter of claim 6 , wherein the first dust-collecting electrode is connected to a positive pole of a voltage generator, and the second dust-collecting electrode is connected to a negative pole of the voltage generator.
8. An electrical dust-collecting filter, comprising:
a dust-collecting unit including a dust-collecting body and dust-collecting electrodes configured to generate an electrical field in the dust-collecting body, the dust-collecting body having a honeycomb sheet-like structure in which a plurality of air channels is laterally formed through the dust-collecting body and discharge apertures are formed in upper and lower surfaces thereof at inlets of the plurality of air channels; and
a discharge unit, integrally formed with the dust-collecting unit at the inlets of the plurality of air channels to cause corona discharge in air introduced into the inlets of the plurality of air channels.