Abstract: An electro-ionic device configured for being worn on the face of a person is disclosed. The electro-ionic device includes at least two electrical conductors spaced apart from each other defining at least a portion of a respiratory pathway therebetween and a circuit configured to apply a first voltage between the two conductors during inspiration and a second voltage greater than the first voltage during expiration.

Abstract: 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.

Abstract: Disclosed are methods of measuring moisture. Specifically, methods of measuring moisture on dry or nearly dry surfaces using an electrochemical sensor are disclosed. The method comprises applying a coating comprising an electrolyte to an electrode wherein water in the air can permeate the coating, applying a voltage to the electrode, detecting a current and, determining if the current indicates the presence of moisture. As a voltage is applied, oxygen in the water is reduced and produces a measurable signal. The method includes measuring the amount of or decrease of dissolved oxygen (in the form of water) at the surface of the electrode over time. Reduction of oxygen acts as a surrogate for water/moisture and, as such, the dryness of the surface of the electrode is calculated based on a predetermined relationship between current and dissolved oxygen (in the form of water).

Abstract: An electrostatic precipitator is provided capable of preventing a reduction in dust collection effect of ionic wind, and increasing dust collection efficiency. The electrostatic precipitator includes: a plurality of collecting electrodes (4) in the form of circular pipes arranged at predetermined intervals in a direction orthogonal to a longitudinal direction of the electrodes; and a plurality of protrusions (5a) protruding toward the collecting electrodes (4) and arranged offset in parallel with the orthogonal direction. An equivalent diameter of a cross section of the collecting electrode (4) is 30 mm to 80 mm. An opening ratio of the collecting electrodes (4) arranged at predetermined intervals is 10% to 70%.

Abstract: An electrostatic-precipitator air cleaner includes a base, a shell, a fan, a barrel, a high-voltage discharge module, a distribution module and a precipitation module. The shell is connected to the base. The fan is connected to an upper portion of the shell. The barrel is connected to the shell above the base. The high-voltage discharge module is connected to the base and inserted in the barrel. The distribution module is connected to the high-voltage discharge module. The precipitation module is inserted in the barrel.

Abstract: An electrostatic precipitator having an adaptive discharge electrode is disclosed. In some embodiments, the discharge electrode may be formed of a non-ohmic material that exhibits a saturation velocity above a voltage threshold. The non-ohmic material may have a semiconductor with doping impurities or ceramics. In other embodiments, the discharge electrode is formed of an ohmic material characterized by increased resistance through the discharge electrode.

Abstract: A device for producing an electrical field in an exhaust gas system includes an exhaust gas line in which at least one electrode is disposed. The at least one electrode is in contact with a power supply and is constructed to have at least one metal plate.

Abstract: A multi-sectional linear ionizing bar with at least four elements is disclosed. First, disclosed bars may include at least one ionization cell with at least one axis-defining linear ion emitter for establishing an ion cloud along the length thereof. Second, disclosed bars may include at least one reference electrode. Third, disclosed bars may include a manifold for receiving gas or air from a source and for delivering same past the linear emitter(s) such that substantially none of the gas/air flows into the ion cloud. Fourth, disclosed bars may include means for receiving the ionizing voltage and for delivering same to the linear emitter(s) to thereby establish the ion cloud. In this way, disclosed ionizing bars may transport ions from the plasma region toward a charge neutralization target without inducing substantial vibration of the linear emitter and without substantial contaminants from the gas/air flow reaching the linear emitter.

Abstract: A system for enhancing air quality by collecting airborne particles. The system includes at least one ground plane, at least one corona point, an ionization field strength adjustment mechanism and a cleaning mechanism. The at least one ground plane is operably mounted proximate to where the airborne particles are present. The at least one ground plane includes at least one ground plane surface. The least one corona point operably is mounted to the at least one ground plane for causing an accumulation of particles to be deposited on the at least one ground plane surface. The ionization field strength adjustment mechanism enables a distance between the at least one corona point and the at least one ground plane to be adjusted. The cleaning mechanism is capable of removing the accumulation of particles from the at least one ground plane surface.

Abstract: A system and method of treating air. Bipolar ionization is delivered to an airflow within a conduit from a tubeless ion generator. The ionized airflow may be delivered to a conditioned airspace by an HVAC system. In alternate applications, the airflow delivers ionized combustion air to an engine. The invention also includes a mounting assembly for positioning one or more ion generators into an airflow.

Abstract: Disclosed is a system for filtering airborne particles from an occupied space. The system permits the removal of airborne particles by manipulating both the charge and the size of the particles, thus enabling the capture of particles that most other typical filtration systems leave behind. More specifically, the system captures small airborne particles through the use of a series of electric fields, forcing them to be trapped in a series of filters or collide to form larger particles, whereby their movement and capture are subsequently governed primarily by airflow. The system controls particle behavior by utilizing specific electromagnetic fields to collide particles, capture particles, and deactivate live pathogens that get captured.

Abstract: This device for inactivating and finely filtering viruses and microorganisms in a flow of air is intended for cleaning air or gas. The device includes a high voltage power supply (4) and the following components arranged in series in the direction of flow: a unit (1) for pre-treating a flow of air, a two-section inactivation chamber (2) and a precipitator (3). The pre-treating unit (1) consists of oppositely charged conductive filtering elements (7, 7?). The first conductive filtering element (7) in the direction of flow is in the form of a cylindrical electrode (6) and a plate (9) which is made of a current conductive, highly porous material and is positioned at a distance from the free end face of the cylindrical electrode (6). A needle electrode (8), electrically associated with the plate (9), is adjacent to said plate.

Abstract: A free radical injection ionizer for flue gas treatment with corona discharge includes an injection device for releasing free radical source substances and an electrode device for producing corona, wherein the injection device and the electrode device are arranged separately, wherein the electrode device includes a conductive pole, and discharge tips arranged on the upper and lower sides of the conductive pole at equal intervals, and the injection device includes nozzles symmetrically arranged on two sides of the electrode device, and two lines of holes axially arranged on the walls of the nozzles nearby the electrode device, the axial lines of the holes directing the discharge tips nearest the holes.

Abstract: An apparatus for reducing soot particles in exhaust gas, particularly of an internal combustion engine, includes first and second at least partially electrically conductive structures with an intermediate space therebetween, a high voltage source forming a potential between the first and second structures and at least one at least partially electrically conductive intermediate structure in the intermediate space receiving an intermediate potential. A method for treating the exhaust gas includes conducting exhaust gas from the first to the second structure and applying a high voltage at least temporarily between the first and second structures. At least part of the soot particles in the exhaust gas is ionized or agglomerated and deposited on the second structure. A high voltage between potentials of the first and second structures is applied at least temporarily to the intermediate structure. An electric field is influenced favorably and disruptions from undesirable voltage flashovers are reduced.

Abstract: An exhaust gas treatment device includes at least a first at least partially electrically conductive honeycomb body having a first front side and a first rear side, a second at least partially electrically conductive honeycomb body having a second front side and a second rear side, an intermediate space between the first honeycomb body and the second honeycomb body, a power supply for the formation of an electric potential between the first honeycomb body and the second honeycomb body, and a multiplicity of electrodes fastened to the first honeycomb body, extending beyond the first rear side over a first length into the intermediate space and positioned at a first distance from the second front side of the second honeycomb body. A method for treating motor vehicle exhaust gas containing particles and a motor vehicle are also provided.

Abstract: An assembly for sealing an inlet into a to-be-sealed space, comprising the following features: at least one charging electrode that is connectable to one pole of a high voltage source is disposed in a first area of the inlet, an opposing electrode is disposed in a second area of the inlet that lies opposite of the first area, and the electrodes are disposed in a manner aligned with each other such that an influencing zone, which is formed between the electrodes, acts on influencible particles that penetrate from the outside in the direction towards the to-be-sealed space, such that these particles are accelerated in the direction away from the to-be-sealed space.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, wherein a property of the filter medium varies along the length of the filter medium.

Abstract: A device having advantages in terms of equipment maintenance, since it provides maximum limitation of the onset of electric arcing between the electrodes, including a vertical cathode equipped with emissive points, these points being offset at an angle from each other from one plane to another, so as to be optimally distributed in space. One embodiment using two planar anodes, between which several vertical cathodes are arranged equipped with points, is also envisaged.

Abstract: A multi-sectional linear ionizing bar with at least four elements is disclosed. First, disclosed bars may include at least one ionization cell with at least one axis-defining linear ion emitter for establishing an ion cloud along the length thereof. Second, disclosed bars may include at least one reference electrode. Third, disclosed bars may include a manifold for receiving gas or air from a source and for delivering same past the linear emitter(s) such that substantially none of the gas/air flows into the ion cloud. Fourth, disclosed bars may include means for receiving the ionizing voltage and for delivering same to the linear emitter(s) to thereby establish the ion cloud. In this way, disclosed ionizing bars may transportions from the plasma region toward a charge neutralization target without inducing substantial vibration of the linear emitter and without substantial contaminants from the gas/air flow reaching the linear emitter.

Abstract: The present invention relates to an electrostatic filter. Particularly but not exclusively the invention relates to an electrostatic filter for removing dust particles, for example an electrostatic filter for use in a vacuum cleaner, fan or air conditioner. The electrostatic filter includes a filter medium located between a first and a second electrode, each at a different voltage during use, such that a potential difference is formed across the filter medium, the first and second electrodes being substantially non-porous.

Abstract: A system for enhancing air quality within a poultry production facility that includes an enclosure, at least one ground plane, at least one corona point and a corona point position adjustment mechanism. The enclosure is adapted to receive a plurality of poultry. The at least one ground plane is mounted with respect to the enclosure. The corona point position adjustment mechanism enables a distance between the at least one corona point and the at least one ground plane to be adjusted.

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: The present invention relates to a charging device having a charge section (20) for charging a floating particle in an air to be handled, and an air handling device (an air cleaning device) having the charging device. The charge section (20) is constituted by a first charge section (20a) adopting an impact charging technique and a second charge section (20b) adopting a diffusion charging technique. With this structure, charging and collection of dust can be accomplished only in the casing of the device, and therefore, an increase in size of the device can be avoided.

Abstract: An air handling device (10) includes an air flow path (13) in which a charge section (20) for charging dust in an air to be handled, and a precipitator (30) for collecting the charged dust are placed. The charge section (20) includes a discharge electrode (25) and a counter electrode (26) to perform diffusion charging. A diffusion space (13a) is provided at a location between the charge section (20) and the precipitator (30).

Abstract: A method, and an apparatus to reduce and remove liquid droplets in air, such as fog, mist, haze, spray or steam. The mist and/or air borne water or other liquid droplets catching and collection apparatus creates an “electric wind”, especially enforced by charged needle points or line arranged constructions and/or wires of the first electrode and an electric charging of mist and/or air borne water or other liquid droplets, which will be directed by the “electric wind” and the electric field between the electric source and the opposite grounded or opposite charged counter electrode (second electrode) of fine gauze or something comparable.

Abstract: An electrostatic precipitator for removing solid and liquid components from an aerosol includes a precipitator housing having a raw gas inlet for an aerosol to be cleaned, a clean gas outlet for cleaned aerosol, and at least one aerosol supply channel flange-mounted to the raw gas inlet, a drain device for solid and liquid components that are separated from the aerosol, an ionization stage externally powered via a high-voltage bushing and including at least one metallic high-voltage rod that extends into a flow path of the aerosol and to which high voltage is applyable, and a collector stage disposed in the flow path downstream of the ionization stage.

Abstract: The present invention is an air purification method and device. Due to the lower airflow resistance that the present invention induces, an exhaust fan or blower with motor of lower torque is adopted. Consequently, the whole air purification is operated at a lower noise level. Lower operational voltage is applicable for the high-voltage electrostatic precipitator device and provides a similar or superior performance and effectiveness for dust removal. The air purification device/system is designed with higher flexibility and of more compact in dimension and size. Dust is removed from the environment by a high voltage electrostatic precipitator. The airflow stream within a high-voltage electrostatic precipitator is such that the direction of the path of the airflow is changed at least twice.

Abstract: Liquid and/or particle-shaped impurities are precipitated from a stream of gas, for example, from a stream of gas that originates from a crankcase of an internal combustion engine and is directed to the engine's intake side. The stream of gas is passed through a gas discharge section between two electrodes. The stream of gas is passed between an emission electrode which is formed by electrode tips and an opposing electrode at a distance therefrom. A direct voltage which exceeds the breakdown voltage is applied to the electrodes using a direct current high voltage source, and the current which occurs over the gas discharge section between the electrodes is limited. A stable low energy direct current plasma is formed in the space between the two electrodes. The impurities are electrically charged and attracted to the opposing electrode by means of electrical field forces.

Abstract: An electrostatically atomizing kit for use in a vehicle has an atomizing unit in combination with a plurality of differently shaped deflector guides. The atomizing unit is supplied with water and electrostatically atomizing the water into charged minute water particles in the form of a mist to be carried on a conditioned air blowing into a passenger's room through a blow port. The deflector ducts are selectively detachable to the blow port, and are differently shaped to each other to deflect the conditioned air carrying the mist in different directions in order to effectively concentrate the mist carried air to a particular object or item in the passenger's room.

Abstract: The present invention provides an exhaust gas purifying device including an electrically insulated hollow cylindrical case, a cylindrical outer circumferential electrode arranged on an inner wall of the hollow cylindrical case, a bar-shaped center electrode held on a center axis of the outer circumferential electrode, and a metallic hollow cylindrical body arranged between the outer circumferential electrode and the center electrode, wherein the metallic hollow cylindrical body is electrically insulated and has a plurality of holes to permit particulate matter to pass therethrough without being accumulated.

Abstract: The invention concerns a device for air/water extraction by semi-humid electrostatic collection, comprising a chamber (7) containing a discharge electrode (1) for generating an ion flow from an ionized gas accumulation surrounding the discharge electrode (1) and a counter-electrode (2), an inlet (3) for mixing air and aerosol to be extracted which contains liquid or solid particles, a steam supply tube (8) and an outlet (4) for the cleansed air. The invention is characterized in that the device enables steam to be introduce the steam supply tube (8) in the gap between the discharge electrode (1) and the counter-electrode (2) so as to form a steam sheath (10) enclosing the discharge electrode over its entire length, such that the treated air is not steam-saturated.

Abstract: An airborne particulate sampling device is disclosed. The device includes a conduit whose interior allows the flow of air through the device. The conduit, or at least its surface, is a conductor. The device also includes an electrode with a sharp tip or edge on or near the output side of the conduit. An electrically conducting particle collector outside the conduit is positioned so that a surface is perpendicular or approximately perpendicular to the axis of the funnel. A fan or other blower forces air through the funnel. A power supply imparts an electrostatic potential difference between the electrode, on the one hand, and the holder and particle collector, on the other hand. The electrostatic potential difference produces a corona field in the air in the vicinity of the electrode's sharp tip. The corona field imparts a charge to airborne particles.

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: A small area electrostatic aerosol collector includes a collector housing, an inlet nozzle that extends from the housing and an exit port that provides an exit for air to flow back out of the housing. A pumping arrangement pulls air into the housing through the inlet nozzle. The sampled air is moved through ductwork such that particulates are collected on a substrate and the air is evacuated through the exit port after collection. The collector includes a charging device positioned within the ductwork to create an electric field defining a charging point that the air passes through between the inlet nozzle and the substrate. The substrate is held at a neutral or opposite charge relative to the electric field created by the charging device. Particulates are collected on the sample substrate by containing the aerosol in a small area and by forcing the aerosol to flow near the substrate.

Abstract: A free radical injection ionizer for flue gas treatment with corona discharge comprises an injection device for releasing free radical source substances and an electrode device for producing corona, wherein the injection device and the electrode device are arranged separately, wherein the electrode device comprises a conductive pole, and discharge tips arranged on the upper and lower sides of the conductive pole at equal intervals, and the injection device comprises nozzles symmetrically arranged on two sides of the electrode device, and two lines of holes axially arranged on the walls of the nozzles nearby the electrode device, the axial lines of the holes directing the discharge tips nearest the holes.

Abstract: A device for collecting particles that have a high electron affinity, particularly explosive particles, from a gas, includes a flow channel (12a) in which at least one electrically positive collector electrode (20a) and at least one ionising electrode (18a) are arranged, between which an electrical field is present so that the particles having high electron affinity can be indirectly charged by corona discharge on the ionising electrode (18a) and can be displaced towards the collector electrode (20a).

Abstract: Clean corona gas ionization by separating contaminant byproducts from corona generated ions includes establishing a non-ionized gas stream having a pressure and flowing in a downstream direction, establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent at least a substantial portion of the byproducts from migrating into the non-ionized gas stream, and applying an electric field to the plasma region sufficient to induce at least a substantial portion of the ions to migrate into the non-ionized gas stream.

Abstract: Clean corona ionization bars separate contaminant byproducts from corona generated ions by establishing a non-ionized gas stream having a pressure and directed toward an attractive non-ionizing electric field of a charge neutralization target, by establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent byproducts from migrating into the non-ionized gas stream. The ionization bar(s) may be located sufficiently close to the charged neutralization target that a non-ionizing electric field of the target induces at least a substantial portion of the ions to migrate into the non-ionized gas stream and to the neutralization target as a clean ionized gas stream.

Abstract: The invention is a discharge electrode in an electrostatic precipitator having a power supply connected to at least one collection electrode and a flow of gas across the collection electrode. The discharge electrode has a plurality of conductive fibers electrically connected to the power supply and fiber tips exposed to the flow of gas. The fiber tips preferably extend from a composite in which the fibers reinforce a matrix material, but alternatively can be a large number of filaments extending from a composite rod.

Abstract: An electro-kinetic air mover for creating an airflow using no moving parts. The electro-kinetic air mover includes an ion generator that has an electrode assembly including a first array of emitter electrodes, a second array of collector electrodes, and a high voltage generator. Preferably, a third or leading or focus electrode is located upstream of the first array of emitter electrodes, and/or a trailing electrode is located downstream of the second array of collector electrodes. The device can also include an interstitial electrode located between collector electrodes, an enhanced collector electrode with an integrally formed trailing end, and an enhanced emitter electrode with an enhanced length in order to increase emissivity.

Abstract: An air conditioning system with an electrostatically atomizing function includes an electrostatically atomizing unit and a ventilation duct which flows conditioned air. The electrostatically atomizing unit generates a mist of charged minute water particles. The electrostatically atomizing unit is provided with a discharge port which locates adjacent to an air outlet of the ventilation duct. The mist of the charged minute water particles flows into an airflow which is sent from the ventilation duct. The mist of the charged minute water particles effectively spreads to the space by the air flow without dissipating inside the ventilation duct.

Abstract: Clean corona ionization bars separate contaminant byproducts from corona generated ions by establishing a non-ionized gas stream having a pressure and directed toward an attractive non-ionizing electric field of a charge neutralization target, by establishing a plasma region of ions and contaminant byproducts in which the pressure is sufficiently lower than the pressure of the non-ionized gas stream to prevent byproducts from migrating into the non-ionized gas stream. The ionization bar(s) may be located sufficiently close to the charged neutralization target that a non-ionizing electric field of the target induces at least a substantial portion of the ions to migrate into the non-ionized gas stream and to the neutralization target as a clean ionized gas stream.

Abstract: In an electrostatic precipitator for filtering particulate matter from a gas, a fan (10) draws the gas (5) through an ioniser section (7) and a collector section (6). Ioniser blades (3) with sawtooth spikes (8) create a corona discharge (4) when charged to a high voltage, so that gas-borne particles are charged when passing through the corona area. The collector section (6) consists of a set of metallic plates (1, 2) of which every other plate (1) is connected to ground, while the remaining plates (2) receive a charge by induction from the ioniser blades (3), and act as repeller plates, pushing charged particles in the gas flow (5) over to the grounded plates (1).

Abstract: A the discharge electrode made of at least two parts. One part is the mast, which is made from substantially non-electrically conductive material, such as a CPVC pipe. The second part is a spike-carrying elongated member, such as a wire, made of substantially electrically conductive material, with sharpened spikes extending from the wire. The spike-carrying elongated member is attached to the mast, such as by winding around the mast in a helical pattern, and connected to an electrical device. The spikes extend away from the mast.

Abstract: Embodiments of the present invention are directed to a method and apparatus for moving air using an air-conditioning system therein, whereby the air-conditioning system preferably includes at least one emitter electrode, at least one collector electrode, at least one driver electrode disposed adjacent to the collector electrode, and/or at least one trailing electrode positioned downstream of the collector electrode. The collector electrode and the driver electrode are removable from the device. In one embodiment, the driver electrodes are removable from the device and/or the collector electrode. The ability of remove the collector electrode as well as driver electrode allow for easy cleaning of the electrodes. In one embodiment, the present device includes a removable exhaust grill upon which the driver electrode and/or the trailing electrode are coupled to. The removable grill allows the user to easily clean the driver electrode without having to remove the collector electrode.

Abstract: A method, and an apparatus to reduce and remove liquid droplets in air, such as fog, mist, haze, spray or steam. The mist and/or air borne water or other liquid droplets catching and collection apparatus creates an “electric wind”, especially enforced by charged needle points or line arranged constructions and/or wires of the first electrode and an electric charging of mist and/or air borne water or other liquid droplets, which will be directed by the “electric wind” and the electric field between the electric source and the opposite grounded or opposite charged counter electrode (second electrode) of fine gauze or something comparable.

Abstract: The disclosure relates to an air pollution sensor system incorporated in an enclosure, the enclosure including an air handling system inside an air duct, the air duct enabling a communication between air inside the enclosure and air outside the enclosure. The air duct including an air inlet for receiving air and an air outlet for releasing handled air inside the enclosure. The air pollution sensor system includes at least one ultra fine particle sensor capable of sensing particles with a diameter in a range of approximately 5-2500 nm, preferably in a range of approximately 5-1000 nm and more preferably in a range of approximately 5-500 nm inside the enclosure and providing a pollution information signal in response to the sensing of the particles. The disclosure further relates to various types of ultra fine particle sensors and air handling systems.

Abstract: Liquid and/or particle-shaped impurities are precipitated from a stream of gas, for example, from a stream of gas that originates from a crankcase of an internal combustion engine and is directed to the engine's intake side. The stream of gas is passed through a gas discharge section between two electrodes. The stream of gas is passed between an emission electrode which is formed by electrode tips and an opposing electrode at a distance therefrom. A direct voltage which exceeds the breakdown voltage is applied to the electrodes using a direct current high voltage source, and the current which occurs over the gas discharge section between the electrodes is limited. A stable low energy direct current plasma is formed in the space between the two electrodes. The impurities are electrically charged and attracted to the opposing electrode by means of electrical field forces.

Abstract: An air filter, an elevator having the same, and an air conditioning control method thereof purify the air inside the elevator to make the air safe and pleasant using a micro plasma ion generator (MPI). The elevator includes a cage which moves up and down in a vertical direction of a building and an air filter which purifies the air inside the cage. The air filter includes an ion generator which generates ions by a plasma discharge to discharge the ions into the cage, a dust sensor which detects a dust contamination level in the cage, and a controller which compares the dust contamination level detected by the dust sensor with a predetermined standard contamination level and operates the ion generator If the dust contamination level is equal to or greater than the predetermined standard contamination level.

Abstract: The present invention relates to an ionizer mounting structure for a vehicle air conditioning system. The air conditioning system includes an air conditioning case having an internal passageway and an ionizer for generating negative ions and positive ions within the internal passageway. The air conditioning case has a discharge electrode insertion hole and the ionizer has a plurality of discharge electrodes extending into the internal passageway through the discharge electrode insertion hole. The ionizer mounting structure includes a mounting and demounting structure for allowing the ionizer to be mounted to the air conditioning case through sliding movement from a demounting position on a passenger room side to a mounting position above the air conditioning case and for allowing the ionizer to be demounted from the air conditioning case through sliding movement from the mounting position to the demounting position.