Abstract: A device 2 to remove polar molecules like water vapor from an air stream is provided herein. The device includes a non-conductive housing 4 encapsulating a chamber 5 where the chamber 5 includes a fan 6 located at one end of the chamber 5 which allows air 24 to enter into the chamber 5, at least one metallic brush 12 is located inside a chamber and mounted on a dielectric holder 14, a curved solid wall 39 integrated with the non-conductive housing 4 at one end where the curved solid wall 39 allows smooth passage of air flow 24 from the chamber 5 and ensures minimum impingement on the brush 12, a curved wire mesh 40 integrated with the non-conductive housing 4 at the other end opposite to the curved solid wall 39, a power supply 18 to charge the metallic brush 12 and the curved wire mesh 40, where the metallic brush 12 when charged ionizes the air 24 to produce the ion current 26, facilitating removal of polar molecules from the air 24 to generate purified air 42 from the device 2.

Abstract: A hybrid composite discharge electrode (HCDE) (20) includes at least one metal layer (22) and at least one carbon fiber layer (26). The HCDE (20) improves the stability and uniformity of the corona while being corrosion-resistant, lightweight, and compact. Additionally, a method of making a HCDE (20) is provided. In another aspect, an electrostatic precipitator (60) is provided and includes a hybrid composite discharge electrode (62).

Abstract: The present invention relates to a respirator without breathing resistance, which has an air inlet duct that passes through an inside and an outside of the respirator and that has asymmetrical electrodes and particle capturing plates formed on an inner surface of the air inlet duct; ozone removing element that removes ozone generated by micro-plasma; and high voltage dc-dc converter that provides high voltage to the asymmetrical electrodes. It employs asymmetrical electrodes and particle capturing plates to filter air without generating breathing resistance. When the respirator according to the present invention is used, safety of a wearer may be maintained in accordance with an environment and breathing may be smoothly performed even while introduction of pathogenic bacteria, viruses, fungi, spores, fine dust, or the like included in air may be effectively blocked. Accordingly, the respirator may be widely utilized to maintain the safety of the wearer in various environments.

Abstract: A particle collector for collecting biological material using electrostatic precipitator (ESP) technology including a removable ESP collection tube having an electrode wire suspended therein, a high voltage power supply coupled to the electrode wire for generating an ionization field within the collection tube causing smaller particles entering the collection tube to precipitate onto the walls of the collection tube, electronics including a microcontroller for controlling the operation of the collector, and a housing assembly for housing the collection tube, the high voltage power supply and the electronics.

Abstract: A method and arrangement to improve animal's biological and/or physical performance by reducing the bioload, defined as biologically active particles in the stable air or within transporter vehicles. The method includes generating a negatively charged electrostatic field operating within the room capturing the particles. The arrangement includes elements for producing a negatively charged electrostatic field capturing air borne particulate matter whereby high voltage >6 kV at low amperage (<10 mA) is applied to a basic conductive structure positioned in the air of the stable or the transporter vehicle, to which carbon fibre filaments are attached, causing the release of electrons from the free ending carbon fibres into the air and thereby generating the negatively charged electrostatic field.

Abstract: An electrostatic air conditioner having at least one ion emitting member (i.e., corona frame) and at least one ion collecting member (i.e., collecting cartridge) is provided. The corona frame and collecting cartridge are configured to have active and passive areas and be removable from the housing within which they are positioned. The passive areas provide additional spacing between the active area and the side walls of the housing, and provide several advantages over existing electrostatic air conditioners, e.g., eliminates barriers between active corona wires and the housing walls, which prevents any settling of chemically active or electrically active matter (vapor or particles) on such barriers and/or housing walls (due to air flow).

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: An electric precipitator includes a charge unit disposed at an upstream part and a dust collection unit disposed at a downstream part, the charge unit includes charge electrodes and a discharge wire disposed between two neighboring charge electrodes and separated from the charge electrodes, the dust collection unit includes high voltage electrodes, front ends of which are opposite to the charge unit, and low voltage electrodes, front ends of which are opposite to the charge unit and which alternate with high voltage electrodes, and the front ends of high voltage electrodes protrude toward the charge unit as compared to the front ends of low voltage electrodes, thereby guiding electrons to the discharge electrodes due to an electric field formed between the front ends of the high voltage electrodes and the discharge electrodes and thus reducing current leakage through the low voltage electrodes.

Abstract: Various equipment and methods associated with providing a concentrated product gas are provided. In one embodiment, the equipment includes an input device first and second sieve tanks, a variable restrictor, and a controller. In one embodiment, the method includes: a) selecting a desired output setting for the concentrated product gas from a plurality of output settings, b) separating one or more adsorbable components from a pressurized source gaseous mixture via first and second sieve tanks in alternating and opposing pressurization and purging cycles to form the concentrated product gas, and c) selectively controlling a variable restrictor based at least in part on the desired output setting to selectively provide flow between the first and second sieve tanks such that the flow for at least one output setting is different from the flow for at least one other output setting in relation to corresponding pressurization cycles.

Abstract: The method of modeling fly ash collection efficiency in wire-duct electrostatic precipitators provides for the optimization of fly ash collection through the generation of numerical solutions to the electrostatic and electrodynamic equations associated with the particular geometry of the wire-duct electrostatic precipitator. Particularly, the solutions are developed through use of the finite element method and a modified method of characteristics.

Abstract: Disclosed herein are an electric precipitator, which efficiently charges dust particles without lowering dust collecting efficiency, although a velocity of an air current is not uniform, and an air cleaner having the same. The electric precipitator includes a charger unit including at least two charge cells to charge dust particles contained in air, and a collector unit to collect the dust particles charged by the charger unit. The at least two charge cells include a first cell, through which the dust particles pass at a first velocity, and a second cell, through which the dust particles pass at a second velocity different from the first velocity.

Abstract: This invention provides a method for the removal of smut, fine dust and exhaust gas particles from polluted air including providing a particle catch arrangement with a charged surface, the particle catch arrangement being arranged to generate a static electric field, wherein the electric field is at least 0.2 kV/m. The invention further provides a particle catch arrangement including a surface that can be charged, further including a generator arranged to generate charge to the surface that can be charged and to generate a static electric field of at least 0.2 kV/m, wherein the particle catch arrangement is part of or integrated with an object including street furniture.

Abstract: An object of the present invention is to provide an electric dust collector with its dust collecting performance being improved for collecting dust-like particles contained in a gas, whereas the increase in size thereof is being suppressed. An electric dust collector distributes a gas that has flown into a distribution chamber to a plurality of charging flow paths in a casing thereof, causes the distributed gas to flow from the insides of the charging flow paths into internal flow paths through mesh filters that are formed as parts of the dust collecting electrodes and that have a large surface areas per unit volume. Then, the gas is discharged to a central chamber through internal outlets. Subsequently, the flow of the gas is controlled to be discharged to the outside through a gas outlet.

Abstract: Various equipment and methods associated with providing a concentrated product gas are provided. In one embodiment, the equipment includes an input device first and second sieve tanks, a variable restrictor, and a controller. In one embodiment, the method includes: a) selecting a desired output setting for the concentrated product gas from a plurality of output settings, b) separating one or more adsorbable components from a pressurized source gaseous mixture via first and second sieve tanks in alternating and opposing pressurization and purging cycles to form the concentrated product gas, and c) selectively controlling a variable restrictor based at least in part on the desired output setting to selectively provide flow between the first and second sieve tanks such that the flow for at least one output setting is different from the flow for at least one other output setting in relation to corresponding pressurization cycles.

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 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: An air moving apparatus includes an axial fan and an electrostatic device. The axial fan has a rotatable shaft defining a central axis of the axial fan, a plurality of blades secured to the shaft, and an air inlet opening. The electrostatic device is disposed immediately upstream of the air inlet opening of the axial fan, and includes a collector and an emitter. In one embodiment, the electrostatic device includes a cylindrical collector coupled to ground and has a central axis aligned with the central axis of the axial fan. The electrostatic device further includes a plurality of emitter wires coupled to a terminal of a direct current source and extending lengthwise within the cylindrical collector. During operation of the axial fan, the application of an electrical potential between an emitter and a collector causes ionic air movement radially outwardly away from a central axis of the axial fan.

Abstract: An electro-kinetic or electro-static apparatus for moving fluid includes an enlogated electrode energizable with respect to at least one other electrode to generate ions and thereby motivate fluid flow there between. A cleaning device is positioned to frictionally engage at least two opposing surfaces of the elongated electrode. The cleaning device is movable along a length of the elongated electrode to thereby remove detrimental material from the at least two opposing surfaces of the elongated electrode. The cleaning device can be substantially off-center relative to the elongated electrode to frictionally bind upon the elongated electrode during movement of the cleaning device.

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: 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: An air vent air purifier includes a grill portion and a housing that is attached to the bottom of the grill portion. The housing fits within a forced air vent. The housing encloses an ionization grid, control circuitry and energy source. When energized, air flowing through the vent from the air handling device passes through the ionization grid, where it is ionized, thereby cleaning the air throughout the entire room. The grill may include a decorative element to match the décor of a room. Batteries provide the energy. A series of indicator lights indicate a power on condition and the level of the battery.

Abstract: A high-performance labyrinth type air treatment apparatus includes a positively (negatively) charged dust collector mounted in an air passage inside a shell, the positively (negatively) charged dust collector having positively (negatively) charged dust collecting panels arranged in such a manner that a labyrinth-like detoured air path is defined through the positively (negatively) charged dust collector, an air ionization control means having discharge/emitting terminals arranged in the labyrinth-like detoured air path, and an electric fan for causing flowing of air through the positively (negatively) charged dust collector so that negatively (positively) charged heteroparticles carried in currents of air flowing through the labyrinth-like detoured air path are forced, to strike repeatedly against the positively (negatively) charged dust collecting panels and then effectively adhered to the positively (negatively) charged dust collecting panels, achieving extremely high air purification.

Abstract: A discharge electrode using carbon fibers, nanofibers and/or nanotubes to generate the corona discharge. The invention contemplates carbon fiber electrodes with or without a polymer matrix to form a composite, and a supporting configuration in which the fibers are wrapped helically around a supporting rod that extends along the length of the electrode. Another supporting configuration includes the fibers stretched across the gas flow path. Yet another supporting configuration includes mounting the fibers along the length of the support rod substantially parallel to the rod.

Abstract: A method is provided which can efficiently remove conidia and microbe or the like of a phytopathogen from air and does not cause generation of ozone originated from discharge or so, thereby preventing occurrence of a plant disease without damaging a plant. There are also provided a flying organism removing apparatus and a plant protecting apparatus which can adequately capture flyable organisms, such as spores of a phytopathogen and/or small vermin, by applying an electrostatic field to the flyable organisms. An electrostatic field generated by dielectric polarization is applied to flyable organisms.

Abstract: A wet electrostatic precipitator (ESP) is disclosed to have a housing, several discharge wires, two roughened collection electrodes coated with TiO2 or SiO2 nanoparticles, two porous metallic plates, and two roughened glass plates coated with TiO2 or SiO2 nanoparticles. The porous metallic plates and the glass plates coated with TiO2 or SiO2 nanoparticles located above the collection electrodes are used to enhance the uniformity of the water film. When particles are introduced into the ESP, they are charged by gas ions generated by corona discharge, and then migrate to collection electrodes due to electrostatic force. Finally, particles are removed by uniform water film flowing downward along the collection electrodes. Furthermore, pulse jet passing through the small holes on the collection plates is used to clean discharge wires, maintaining electric corona strength and prolonging the operation life.

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: Hydrogen sulfide is removed from a hydrogen rich gas stream using adsorbents having a low loss of carbon dioxide adsorption capacity upon sulfur loading including high purity silica gels, titania or highly cross-linked, non-chemically reactive resins. The adsorbents may be used to adsorb both carbon dioxide and hydrogen sulfide, or may be used as a guard bed upstream of a separate carbon dioxide adsorbent.

Abstract: The invention relates to a novel gas filter structure, a filtering method and a method of producing the filter structure. The structure according to the invention includes a planar, porous isolation material layer (12) having two opposing surfaces. According to the invention both surfaces of the isolation material layer (12) include comprise a porous conductive layer (14, 16) including a porous filtering matrix treated with a conductive material. The conductive material consists of a material different from the support matrix. By use of the conductive layers it is possible to create in the isolation material an electric field that considerably improves the filtering efficiency of the isolation material, especially for small 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: An apparatus for purifying air, in particular for ventilation and air-conditioning systems, has an air filter (11), which is inserted in an air channel (10) or in a filter wall for collecting dust. A dust agglomerator (12) with a DC voltage field is connected directly upstream of the air filter (11). In conventional filters, the efficiency is increased to such an extent that the dust throughput can be approximately halved. In addition, the initial efficiency is only insignificantly reduced during the operating time.

Abstract: A method is provided which can efficiently remove conidia and microbe or the like of a phytopathogen from air and does not cause generation of ozone originated from discharge or so, thereby preventing occurrence of a plant disease without damaging a plant. There are also provided a flying organism removing apparatus and a plant protecting apparatus which can adequately capture flyable organisms, such as spores of a phytopathogen and/or small vermin, by applying an electrostatic field to the flyable organisms. An electrostatic field generated by dielectric polarization is applied to flyable organisms.

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: The electronic air filter has a pair of pads between which a grid is sandwiched. The pads are composed of glass fibre or like filtering medium while the grid is composed of two or more pads of carbon interconnected by a network of filaments having a cotton core surrounded by a graphite sheath. The grid is connected to a source of electrical power at a voltage at which a corona field develops around the grid with resulting polarization of the grid.

Abstract: An embodiment of the present invention provides a system for removing foreign objects from the airstream entering an inlet system of a turbomachine. The system may include an electrostatic system that may be configured to charge conductive, or partially conductive foreign objects that are in the airstream flowing through the system. This system may create an electric field to draw the charged foreign objects, allowing for a collecting section to remove the charged foreign objects from the airstream. An embodiment of the present invention may provide an automatic accumulation system for collecting the foreign objects removed from the airstream. An embodiment of the present invention may provide an automatic cleaning system for cleaning components of the collecting system.

Abstract: A portable high air volume electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a collection electrode adapted to carry a variety of collecting media. An air intake is provided such that air to be analyzed flows through an ionization section with a transversely positioned ionization wire to ionize analytes in the air, and then flows over the collection electrode where ionized analytes are collected. Air flow is maintained at but below turbulent flow, Ionizable constituents in the air are ionized, attracted to the collection electrode, and precipitated in the selected medium which can be removed for analysis.

Abstract: Systems and methods for cleaning emitter electrodes of air conditioner systems are provided. The air conditioning system includes an emitter electrode, a collector electrode and a high voltage generator to provide a high voltage potential difference between the emitter and collector electrodes. The system also includes a cleaning member having a channel through which the emitter electrode passes. A plunger mechanism and a spring, or a lever and a fulcrum, are used to force the cleaning member to travel upward along the emitter electrode to thereby frictionally removing debris from the emitter electrode. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures and the claims.

Abstract: An air conditioner having an interior casing in which an air filter is provided along an inner face of an air suction inlet, includes a filter cleaning part, a cleaning time drive member for moving the air filter and the filter cleaning part with respect to each other, and an ultraviolet light irradiation unit which irradiates the air filter with ultraviolet rays. The air filter and the filter cleaning part are relatively moved by the cleaning time drive member to remove dust adhered to the air filter, and the ultraviolet light irradiation unit irradiates an uncleaned face of the air filter with the ultraviolet rays.

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: A flotage trapping device has at least one plus electrode and at least one minus electrode. The plus electrode and minus electrode are alternately disposed. The electrodes trap the flotage floating in the air. Another flotage trapping device has at least one electrode of a single polarity and a space ion generating device for generatingions of polarity opposite to that of the electrode so as to form an ion space around or adjacent the electrode. A flotage repelling device has at least one electrode of a single polarity, and a space ion generating device for generating ions of the same polarity as that of the electrode so as to form an ion space around or adjacent of the electrode.

Abstract: An air purifier includes a shell with an air inlet and an air outlet. An electric field filter, an air passage and a blower are disposed inside the shell. The electric field filter includes a filter frame disposed at the air outlet and a grid base disposed under the filter frame. A filter is provided inside the filter frame. One end of the air passage connects with the grid base and the other end connects with the blower. The blower is disposed at the air inlet. The filter frame and the grid base are integrated as a hermetic whole. Due to the integrated configuration of the filter frame and the grid base, when removing out the electric field filter, the power is cut automatically. This effectively prevents an occurrence of the electroshock, and improves safety performance of the purifier. Furthermore, air leakage can be greatly reduced, for there is no gap between the filter frame and the grid base.

Abstract: An electrostatic precipitator element includes preferably a mesh made of at least two individually insulated conductors with defined openings therebetween. An electrical field in the openings electrostatically attracts suspended particulate to a respective conductor for collection.

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: There is provided a flotage trapping device using electrostatic field. The flotage trapping device has a body including a power source portion and a boosting portion fed from the power source portion, and a collector portion including a collector to which the plus and/or minus high voltage obtained from the boosting portion is applied. The collector portion is formed as a collector cassette by unitizing the collector portion in the form of a cassette. A fixing mechanism is provided between the body and the collector cassette for connecting and disconnecting the body and the collector cassette through one-touch operation. The electric connector for high voltage is provided between the body and the collector cassette for electrically connecting and disconnecting the body and the collector cassette through one-touch operation. As a result the collector cassette is detachably mounted on the body.

Abstract: A wet electrostatic precipitator is disclosed to include a condensation-growth chamber, a precipitation chamber connecting with the condensation-growth chamber, three dual-sleeve members mounted in the precipitation chamber, three discharge electrodes connecting with the dual-sleeve members, two insulating members covering on the inner surface of the precipitation chamber, and two ground electrodes mounted on the outside of the precipitation chamber. Thus, a uniform water film is formed on the surface of the insulating members to wash away the particles from waste gas. The condensation-growth chamber is provided for the particles to grow therein and thereby enhances the collection efficiency. The insulating member acts as a shield between the discharge electrodes and the ground electrodes and thereby avoids a short circuit or sparks.

Abstract: The present invention is related to preventing dust agglomeration on a sharp electrode which is used for generating corona. According to certain aspects, the invention includes a dust shroud which decreases or prevents dust accumulation on the sharp electrodes. The dust shroud changes the gas flow path so as to reduce the amount of gas passing near the sharp electrode. An advantage of the shroud is that it prevents dust from building up on the electrodes. The shroud is a simple, passive addition to the electrostatic pump, such that the pump is otherwise able to operate normally throughout its life. In embodiments, the shroud can be used to protect a corona electrode used in heat sink applications especially in electronics cooling. It can also be used in electrostatic precipitators for cleaning dust or chemical or microbe particles from air.

Abstract: A dual-filter electrically enhanced air-filtration apparatus and method are described. One embodiment includes an upstream electrically enhanced filter; a downstream electrically enhanced filter; a first control electrode adjacent to an upstream side of the upstream electrically enhanced filter; a second control electrode adjacent to a downstream side of the downstream electrically enhanced filter; and an ionizing electrode disposed between the upstream and downstream electrically enhanced filters, the ionizing electrode having an electrical potential with respect to the first and second control electrodes. Optional field electrodes may be included to enhance the electric fields associated with the upstream and downstream electrically enhanced filters.

Abstract: Provided is an air purifier, including: a body having an air inlet and an air outlet, a blower, an electric control box, an electrostatic absorption device and a carbon dioxide sensor. The air purifier effectively removes dust particles and bacteria in the air, measures and controls the carbon dioxide content in the air, displays the content of carbon dioxide to users and helps to protect human health.

Abstract: The electrostatic filter for the separation of dust particles has collecting electrodes (3-7) fixed in a housing (2) through which the gas flows and discharge electrodes (16-20) arranged parallel to them and held stretched between insulators (29, 30). For the cleaning of the collecting electrodes (3-7), a cleaning equipment (33) is fixed to a cable (28) having the discharge electrodes (16-20), which can be moved along the surface of the collecting electrodes to be cleaned by means of a pulling device (30-32) having a coiling drum (26, 27).