Abstract: A device comprising a group of electrode elements for a condenser separator of a two-step electrofilter, which group of electrode elements comprises at least two electrode elements in the form of strips or flat planar sheets, the electrode elements being mostly comprised of a core. At least one of the electrode elements or group of electrode elements is formed of at least two different polymers with different electrical properties. A first portion of the electrode element that is disposed closest to an adjacent second electrode element in the condenser separator is formed of an insulating polymer, and a second portion of the electrode element is comprised of at least one current conductive element in the form of a thin coating on the core of the electrode element, or is embedded in the core.

Abstract: A device comprising a group of electrode elements for two-step electrofilters in a condenser separator, which group of electrode elements comprises at least two strip shaped electrode elements (A, B), or two groups of planar disc-shaped electrode elements (A, B), the electrode elements (A, B) to a major part being comprised of a core (M1), and wherein at least one of the electrode elements (A, B) or group of electrode elements (A, B) is formed of at least two different polymers with different electrical properties, wherein a portion (M1, M3, M3?) of the electrode element (A) that is disposed closest to an adjacent second electrode element (B) in the condenser separator is formed of a polymer having a surface resistivity of more than 1×1012 ohm/kV, and wherein a second portion of the electrode elements (A, B) is comprised of at least one current conductive element (M2, M2?, M2?) in the form of a polymer in the form of a thin coating on the core (M1) of the electrode elements (A), or is embedded in said core (M

Abstract: A device for cleaning of indoor air comprising capacitor precipitators, each consisting of two electrode elements or two groups of electrode elements connected to the respective pole of a high voltage source, air transported fans, at least one corona electrode and at least one counter electrode. The corona electrode and the counter electrode are each connected to the respective pole of a high voltage source. The device includes two air flow ducts for the air to be cleaned, which air flow ducts are placed along an axial reference line (AA) at a distance (d) from each other in the direction of the axial reference line (AA). Each air flow duct is associated with a capacitor precipitator and an air moving fan. At least one corona electrode is provided in the space between the air flow ducts. At least one counter electrode is located adjacent to the air flow ducts circumference.

Abstract: Precipitator unit of a two-stage electro filter where air to be cleaned from electrically charged particles is intended to flow through the unit. Said unit comprising at least two cylindrical precipitators (10, 11) that each comprise at least two electrode elements arranged at a gap distance from each other. Each one of the precipitators (10, 11) is also intended to be connected to a high voltage source. The respective electrode elements of a precipitator (10, 11) are connected to different poles of the high voltage source. The main planes of the precipitators (10, 11) are axially spaced in the air flow direction and a cone shaped duct (21) extends between the circumference of the first precipitator (10) and a center opening (13) of the second precipitator (11). A first amount of polluted air flows across the area of the first precipitator (10) and continues afterwards through the inside of the cone shaped duct (21) and out of the unit through the center opening (13) of the second precipitator (11).

Abstract: The present invention relates to a device for cleaning of indoor air comprising capacitor precipitators (12a, 12b) each consisting of two electrode elements or two groups of electrode elements connected to the respective pole of a high voltage source, air transported fans (13a, 13b), at least one corona electrode (K1, K2) and at least one counter electrode (16a, 16b, 16c), wherein said corona electrode (K1, K2) and said counter electrode (16a, 16b, 16c) are connected each to a pole of a high voltage source.

Abstract: Precipitator unit of a two-stage electro filter where air to be cleaned from electrically charged particles is intended to flow through the unit. Said unit comprising at least two cylindrical precipitators (10, 11) that each comprise at least two electrode elements arranged at a gap distance from each other. Each one of the precipitators (10, 11) is also intended to be connected to a high voltage source. The respective electrode elements of a precipitator (10, 11) are connected to different poles of the high voltage source. The main planes of the precipitators (10, 11) are axially spaced in the air flow direction and a cone shaped duct (21) extends between the circumference of the first precipitator (10) and a center opening (13) of the second precipitator (11). A first amount of polluted air flows across the area of the first precipitator (10) and continues afterwards through the inside of the cone shaped duct (21) and out of the unit through the center opening (13) of the second precipitator (11).

Abstract: A method for applying a moisture barrier to a precipitator of cardboard for a two-step electrofilter, wherein the precipitator includes at least two paper bands (5) that constitute electrode elements in the precipitator, which paper bands (5) are multiply wound around a center axis of the precipitator, wherein the paper bands (5) exhibit a thin plastic layer with a thickness of 5-50 micrometers on their lateral surfaces (4), and where proximate electrode elements are arranged at a distance from one another in the radial direction of the precipitator. The method is characterized in that edge parts (6) of the paper bands (5) have a moisture-resistant substance applied to them. The material for fabricating a precipitator of cardboard for a two-step electrofilter is also described.

Abstract: A method for applying a moisture barrier to a precipitator of cardboard for a two-step electrofilter, wherein the precipitator includes at least two paper bands (5) that constitute electrode elements in the precipitator, which paper bands (5) are multiply wound around a center axis of the precipitator, wherein the paper bands (5) exhibit a thin plastic layer with a thickness of 5-50 micrometers on their lateral surfaces (4), and where proximate electrode elements are arranged at a distance from one another in the radial direction of the precipitator. The method is characterized in that edge parts (6) of the paper bands (5) have a moisture-resistant substance applied to them. The material for fabricating a precipitator of cardboard for a two-step electrofilter is also described.

Abstract: An air cleaning apparatus includes an air flow duct, with an extent in an axial direction, to accommodate air flow entering the apparatus, an air-conveying fan unit disposed in the air flow duct, a precipitator connected to a high-voltage source and with a throughflow passage for air to be cleaned. The precipitator includes two electrode elements or two groups of electrode elements, each of the respective two being connected to a respective pole of the high-voltage source, and a unipolar corona electrode disposed close to one end of the air flow duct. A target electrode is disposed at radial spacing from the corona electrode, the corona electrode being so disposed that the ions generated at it can freely spread away from the corona electrode towards the target electrode, and that the target electrode surrounds the air flow entering the apparatus.

Abstract: A device in connection with a circular precipitator (1) for a two-stage electrostatic filter, wherein the precipitator (1) is formed of at least two strip-like electrode elements wound around a centrally arranged bobbin and the electrode elements are arranged at a distance “d” from one another so that gaps are formed between the electrode elements, wherein the device includes elements for rotating the precipitator (1) about its center axis and wherein a vacuum cleaner nozzle (27) is arranged on one side of the precipitator (1), the vacuum cleaner nozzle (27) being situated in the immediate vicinity of the precipitator (1). It is significant for the device that the vacuum cleaner nozzle (27) is provided with at least two elements (35/36) designed to penetrate into the gaps between adjacent electrode elements of the precipitator (1).

Abstract: A device in connection with a circular precipitator (1) for a two-stage electrostatic filter, wherein the precipitator (1) is formed of at least two strip-like electrode elements wound around a centrally arranged bobbin and the electrode elements are arranged at a distance wd? from one another so that gaps are formed between the electrode elements, wherein the device includes elements for rotating the precipitator (1) about its center axis and wherein a vacuum cleaner nozzle (27) is arranged on one side of the precipitator (1), the vacuum cleaner nozzle (27) being situated in the immediate vicinity of the precipitator (1). It is significant for the device that the vacuum cleaner nozzle (27) is provided with at least two elements (35/36) designed to penetrate into the gaps between adjacent electrode elements of the precipitator (1).

Abstract: An air cleaning apparatus includes an air flow duct, with an extent in an axial direction, to accommodate air flow entering the apparatus, an air-conveying fan unit disposed in the air flow duct, a precipitator connected to a high-voltage source and with a throughflow passage for air to be cleaned. The precipitator includes two electrode elements or two groups of electrode elements, each of the respective two being connected to a respective pole of the high-voltage source, and a unipolar corona electrode disposed close to one end of the air flow duct. A target electrode is disposed at radial spacing from the corona electrode, the corona electrode being so disposed that the ions generated at it can freely spread away from the corona electrode towards the target electrode, and that the target electrode surrounds the air flow entering the apparatus.

Abstract: A device for cleaning of an air stream (40) from electrically charged particles (aerosols), the air stream passing through the device, the device including at least two electrode elements (20, 21) that are arranged in planes parallel to each other and at a gap distance (d) between adjacent electrode elements (20, 21). The electrode elements (20, 21) are connected to a respective terminal of a high voltage source, and spacers (11) are provided between adjacent electrode elements (20, 21). It is significant of the device that the spacers (11) constitute electrically insulating material, through which material the air stream may pass, and that the spacers (11) are arranged in such a way that all air transport through the device must pass through the spacers (11).

Abstract: A device for transport and cleaning of air by using electric ion wind, includes an elongated corona electrode), a target electrode and a direct current source that has one terminal connected to the corona electrode and the other terminal to the target electrode, the design and voltage of the corona electrode between the terminals being such that a discharge generating air ions occurs at the corona electrode. The target electrode has an extension in the longitudinal direction of the corona electrode an extension transverse to the longitudinal direction of the corona electrode. The target electrode has a certain permeability to the air flow that is generated between the electrodes, and the device has outlet openings for the air flow.

Abstract: Particle separator having a flow passage for air to be cleaned from electrically charged particles includes at least two electrode element surfaces arranged substantially parallel to each other and at a mutual gap width (d), at least one electrode element surface being designed from a very high ohmic material, preferably with a resistivity corresponding to or higher than antistatic. The particle separator also is intended to be connected to a high voltage source, the second electrode element surface being intended to be connected to the pole of the high voltage source having the lowest absolute potential.

Abstract: Particle separator having a flow passage for air to be cleaned from electrically charged particles includes at least two electrode element surfaces arranged substantially parallel to each other and at a mutual gap width (d), at least one electrode element surface being designed from a very high ohmic material, preferably with a resistivity corresponding to or higher than antistatic. The particle separator also is intended to be connected to a high voltage source, the second electrode element surface being intended to be connected to the pole of the high voltage source having the lowest absolute potential.

Abstract: The present invention is directed to a device (1;1′;1″; 1′″; 1″″; 1′″″) for air cleaning, especially from electrically charged particles, the device (1;1′;1″; 1′″; 1″″; 1′″″) including an air flow channel (2;2′;2″; 2′″; 2″″; 2′″″), an air transporting mechanical fan (3;3′;3″; 3′″; 3″″; 3′″″), a precipitator (4;4′;4″; 4′″; 4″″; 4′″″), a high voltage source (5;5′;5″; 5′″; 5″″; 5′″″), the precipitator (4;4′;4″; 4′″; 4″″; 4′″″) including two band-like electrode elements that are wound several times around an axis or bobbin body (7;7′;7″; 7′″; 7″″; 7′″″), a gap distance being present betwee

Abstract: A device is provided for cleaning air from charged particles in an air flow duct. The device includes at least one precipitator panel including one or more precipitator units that are arranged so that their inlets have a large extension relative to the cross-sectional area of the air flow duct and a relatively small extension in the direction of the air flow through the units. The precipitator panels include at least two electrode elements preferably connected to a high voltage source and located such that all air in the air flow duct passes through the respective electrode elements.

Abstract: A precipitator having a through-flowing passage for the air to be purified. The precipitator is intended to be included in an air purification device, especially for purifying air from electrically charged particles. The precipitator is electrically connected to a high voltage source and has at least two electrode elements or groups of such elements arranged at different potential relative to each other. The electrode elements being designed as band-like strips that are arranged to circle at least once, and preferably several times, around an imaginary axis at a gap distance (d), seen in radial direction relative to the imaginary axis, from adjacent electrode elements. The extension of the electrode elements in the air flow direction is essentially less than their circled length around the imaginary axis. The edge section of the electrode elements, preferably at one side only of the body of the precipitator, are fixed relative to each other by the aid of fixing material.

Abstract: An electrostatic precipitator for purifying air from charged particles. The precipitator includes at least a pair of electrode elements (R and A) spaced apart by a gap distance (a). The electrode elements are moisture-proof. At least one of the electrode elements is composed of a high ohmic cellulose material and is coated with a thin moisture-proof layer.