An electrostatic precipitator is constructed with collecting and repelling electrodes. The collecting electrode is partially shielded from gas shear forces by a shielding structure. The shielding structure is mounted to reduce gas flow along a surface of the collector and includes passages for charged particles to travel to be captured by the collector.

An ion source includes an external housing, an electrically conductive tip, a gas supply system, configured to supply an operating gas into the neighborhood of the tip, and a cooling system configured to cool the tip. The gas supply system includes a first tube with a hollow interior, and a chemical getter material is provided in the hollow interior of the tube.

An ion generating device can include a housing having an opening, an anode and a cathode disposed within the housing and having a space between them in fluid communication with the opening, a power source having a negative terminal and a positive terminal with a first connection between the negative terminal and the anode and a second connection between the positive terminal and the cathode, and an air mover disposed to direct an air flow through the space and out of the opening.

An ion generating device can include a housing having an opening, an anode and a cathode disposed within the housing and having a space between them in fluid communication with the opening, a power source having a negative terminal and a positive terminal with a first connection between the negative terminal and the anode and a second connection between the positive terminal and the cathode, and an air mover disposed to direct an air flow through the space and out of the opening.

An electrification apparatus for dust collection includes an electrification module configured to generate an ion that is emitted to air. The electrification module includes: at least one discharge tip configured to emit the ion in a direction opposite to a flow direction of the air, a conductive plate configured to generate a potential difference with the discharge tip, a frame that defines an appearance of the electrification module and that supports the discharge tip and the conductive plate, and a high voltage supplier configured to generate a voltage to supply the voltage to the discharge tip.

An electrification apparatus for dust collection includes an electrification module configured to generate ions that are emitted to air. The electrification module comprises: a high voltage tip comprising at least one discharge tip configured to emit the ions in a direction opposite to a flow direction of the air, a conductive plate disposed around the discharge tip and configured to generate an electric potential difference with the discharge tip of the high voltage tip, a lower frame that mounts the conductive plate and the high voltage tip, and an upper frame that is coupled to the lower frame and that covers the conductive plate and the high voltage tip so that the discharge tip is exposed to outward.

An electrification apparatus for dust collection includes an electrification module configured to generate an ion emitted to air and comprising: at least one discharge tip configured to emit the ion in a direction opposite to a flow direction of the air, at least one tip holder supporting the discharge tip, a conductive plate generating a potential difference with the discharge tip, and a frame defining an appearance of the electrification module and supporting the tip holder and the conductive plate. The frame comprises an upper frame disposed at an upper side of the conductive plate and a lower frame disposed at a lower side of the conductive plate, the tip holder is disposed between the upper frame and the lower frame, and an upper surface of the tip holder is coupled to the upper frame and a lower surface of the tip holder is coupled to the lower frame.

An electrification apparatus for dust collection includes an electrification module configured to generate ions that are emitted to air. The electrification module comprises: a high voltage tip comprising at least one discharge tip configured to emit the ions in a direction opposite to a flow direction of the air, a conductive plate that surrounds the discharge tip and that is configured to generate an electric potential difference with the discharge tip of the high voltage tip, a lower frame that mounts the conductive plate and the high voltage tip, an upper frame that is coupled to a first side of the lower frame and that covers the conductive plate and the high voltage tip, the discharge tip protruding outward through the upper frame, and a ground mesh coupled to a second side of the lower frame.

A filter media includes flat sheets that are corrugated into a honeycomb matrix wherein air flows through the material and airborne contaminants are captured on the sidewalls of the material, wherein an active electrostatic field is applied to the flat sheets.

A filter media includes flat sheets that are corrugated into a honeycomb matrix wherein air flows through the material and airborne contaminants are captured on the sidewalls of the material, wherein an active electrostatic field is applied to the flat sheets.