This publication discloses an electrostatic filter construction, to be positioned in air ducts or ventilation channels, which electrostatic filter construction includes a charging unit, which charges the particles to be filtered into a first electric potential and arranged in the filter construction in the path of the air flow before filter elements, electrically conducting electrodes connected to a second electric potential different to the potential of the charged particles and set substantially parallel to the direction of the airflow, and bag shaped filter elements positioned after the charging unit in the path of the air flow. According to the invention each bag shaped filter element has at least one designated UV-light source and an element of photo catalytic material like TiO.sub.2.

An air purification unit including an electric filter module through which air to be purified can flow and a first electrode and a second electrode between which the air to be purified flows and between which a first electric field can be generated by applying an electric high voltage provided by a power supply module, wherein the first electrode and the second electrode form an ionizer and wherein a mechanical filter module with a mechanical filter element is arranged downstream of the electric filter module in the direction of flow of the air to be purified, wherein a third electrode is provided in the mechanical filter element or in the mechanical filter module downstream of the mechanical filter element, and wherein a second electric field can be generated between the second electrode and the third electrode by applying an electric voltage.

An arc flash management system including a cabinet having multiple walls surrounding electrical equipment capable of producing arc flash, at least one aperture within one of the walls, and an arc exhaust attachment emanating from at least one of the apertures for directing possible arc flash away from the cabinet.

An arc flash management system including a cabinet having multiple walls surrounding electrical equipment capable of producing arc flash, at least one aperture within one of the walls, and an arc exhaust attachment emanating from at least one of the apertures for directing possible arc flash away from the cabinet.

The present invention relates to: a conductive filter unit provided with an electrode rod including a conductive member protruding from a second electrode cap to the inner space formed by a conductive filter and a metal member arranged on at least part of the surface of the conductive member; a conductive filter module including same; and a fine dust removal system provided with the conductive filter module, wherein the fine dust removal system provided with the conductive filter module generates a strong electric field and a large number of ions between a particle charging device and the conductive filter to increase the charge rate of fine dust, thereby realizing high efficiency of fine dust removal.

A gas exchange device for filtering a gas is provided. The gas exchange device includes a gas-intake channel having a gas-intake-channel inlet and a gas-intake-channel outlet, a gas-exhaust channel disposed aside the gas-intake channel and including a gas-exhaust-channel inlet and a gas-exhaust-channel outlet, a purification unit disposed in the gas-intake channel for filtering the gas passing through the gas-intake channel, a gas-intake guider and a gas-exhaust guider for guiding the gas, a driving controller disposed in the gas-intake channel near the gas-intake guider for controlling enablement and disablement of the purification unit, the gas-intake guider and the gas-exhaust guider, and a gas detection main body for detecting the gas and generating detection data.

An electrostatic oil mist separator for an internal combustion engine includes a positive plate and a negative plate facing each other, a filter arranged between the positive plate and the negative plate, a case having an inlet and an outlet and houses the positive plate, the negative plate, and the filter, and a voltage generator. The electrostatic oil mist separator is configured to cause blow-by gas to flow from the inlet to the outlet between the positive plate and the negative plate in a state in which the voltage generator is applying a voltage across the positive plate and the negative plate, thereby separating oil mist from the blow-by gas by electrostatic adsorption force. At least one of the positive plate and the negative plate is made of a metal plate and includes a plurality of protrusions that are formed by cutting and raising the metal plate.

An electrostatic oil mist separator for an internal combustion engine includes a positive plate and a negative plate facing each other, a filter arranged between the positive plate and the negative plate, a case having an inlet and an outlet and houses the positive plate, the negative plate, and the filter, and a voltage generator. The electrostatic oil mist separator is configured to cause blow-by gas to flow from the inlet to the outlet between the positive plate and the negative plate in a state in which the voltage generator is applying a voltage across the positive plate and the negative plate, thereby separating oil mist from the blow-by gas by electrostatic adsorption force. At least one of the positive plate and the negative plate is made of a metal plate and includes a plurality of protrusions that are formed by cutting and raising the metal plate.

Air filtration assemblies configured to provide instant detection of particles and/or improve particle filtration are disclosed. The assemblies may include an air inlet duct in fluid communication with a compressor of a gas turbine system. The air inlet duct may include an inlet for receiving intake air including intake air particles, and an outlet positioned opposite the inlet. The assembly may also include a plurality of vane filters at the inlet, an array of fabric filters positioned in the air inlet duct, downstream of the vane filters, and a silencer assembly positioned in the air inlet duct, downstream of the fabric filters. Additionally, the assembly may include an electrostatic component positioned in the air inlet duct, downstream of the fabric filters. The electrostatic component may be configured to charge the intake air particles that pass through the vane filters and the fabric filters.

A filter element for filtration of an air stream includes: a folded filter medium forming a bellows, the filter medium being constructed at least in two layers and having a particle filter layer, an electrically conductive filter layer, and at least one edge band, the at least one edge band being connected to at least one outer side of the bellows. At least one further edge band is connected to an outer side of the bellows. The at least one further edge band is electrically conductive. The at least one further edge band forms a pocket open towards one side.