Abstract:
The subject of the invention is a procedure, a filter module, and an air cleaning device composed of such filter modules for the highly efficient cleaning of air containing small contaminating particles. In the course of the procedure, the principle of adhesion and repelling effect is exploited to capture the contaminating particles in the device composed of an appropriate number of filter modules (1). The air to be cleaned is moved like a quasi-electrodynamic linear engine in the device, so that the mass and/or size of the coagulated particles is increased by the powers of two as necessary while passing through two sequential filter modules (1), up to 220 value. This way, the flow velocity of the fine grains with increased mass is decreasing gradually and they are separated or fall out from the flow space, meaning that particles with a starting size below 1 micrometre, in the nano-range, which are the most harmful to the human body, may also be captured. The essential part of the invention is the filter module (1) that is fitted with electrodes (7), composed of a collector (5) and a separator (6) located at a given distance, which are connected to a positive or negative high voltage (8, 9) and are surrounded by a cover consisting of a base plate, connected to zero potential (10), side plates, and a cover plate. Two electrodes (7) form an electrode pair, and two electrode pairs form a filter module (1), where the electrode pairs are placed so that there is one electrode (7) of the opposite potential installed between two electrodes (7) of the same potential. The solution according to the invention may be used in versatile ways, especially on the field of civil environmental protection, as stand-alone, pre-, or post-filter, such as for cleaning the air and exhaust gas in the chimney of industrial plants, for cleaning polluted urban air, for cleaning, de-germination, and filtering pollen from the air of closed premises, and for military purposes on the field of NBC safety as a pre-filter.
Abstract:
A spark management device comprising: a high voltage power source operable to provide an electric power to the load device; a sensor operable to monitor one or more electromagnetic parameters in said load device; a first detector responsive to said one or more electromagnetic parameters to identify a pre-spark condition in said load; and a second detector connected to said first detector to enable said high voltage power supply to rapidly change a magnitude of said electric power to a desirable level in response to said pre-spark condition.
Abstract:
The present invention relates to a method for the agglomeration and/or coagulation of aerosols in a passively moved air mass in open space, with which the moved air mass moves passively through at least one flat, essentially two-dimensional, electrically charged structure (A), and the aerosols (6) contained therein are thus electrically charged positively and negatively in spatial proximity to one another, and in this manner oppositely charged aerosols agglomerate and/or coagulate (8). In another aspect, the invention relates to the use of the method according to the invention for removing water aerosols, in particular mist or fine dusts, from the air.
Abstract:
A device for handling a fluid includes a corona discharge device (602) and an electric power supply (601). The corona discharge device (602) includes at least one corona discharge electrode (603) and at least one collector electrode (605) positioned proximate each other so as to provide a total inter-electrode capacitance within a predetermined range. The electric power supply (601) is connected to supply an electric power signal to the corona discharge and collector electrode (603, 605) so as to cause a corona current to flow between the corona discharge and collector electrodes (603, 605). An amplitude of an alternating component of the voltage of the electric power signal generated is no greater than one-tenth that of an amplitude of a constant component of the voltage of the electric power signal. The alternating component of the voltage is of such amplitude and frequency that a ratio of an amplitude of the alternating component of the highest harmonic of the voltage divided by an amplitude of the constant component of the voltage being considerably less than that of a ratio of an amplitude of the highest harmonic of the alternating component of the corona current divided by an amplitude of the constant component of the corona current, i.e., (Vac/Vdc)
Abstract:
A plasma discharged static eliminator comprises a plasma discharging electrode body for generating plasma as a source of ions. The plasma discharging electrode body includes two electrodes between which alternate voltage is applied, and a dielectric covering the electrodes. The plasma discharged static eliminator further comprises an inner grid electrode disposed around the plasma discharging electrode body, and an outer grid electrode disposed outside of the inner grid electrode.
Abstract:
An electrostatic fluid acceleration and method of operation thereof includes at least two synchronously powered stages with final or rear-most electrodes of one stage maintained at substantially the same instantaneous voltage as the immediately adjacent initial or forward-most electrodes of a next stage in an airflow direction. A single power supply or synchronized and phase controlled power supplies provide high voltage power to each of the stages such that both the phase and amplitude of the electric power applied to the corresponding electrodes are aligned in time. The frequency and phase control allows neighboring stages to be closely spaced at a distance of from 1 to 2 times an inter-electrode distance within a stage, and, in any case, minimizing or avoiding production of a back corona current from a corona discharge electrode of one stage to an electrode of a neighboring stage. Corona discharge electrodes of neighboring stages may be horizontally aligned, complementary collector electrodes of all stages being similarly horizontally aligned between and horizontally offset from the corona discharge electrodes.
Abstract:
In a dust collecting apparatus, a flow path (8) through which a gas containing particulate matter flows is formed by arranging a ground electrode (5) in an outer shell (2), a dust-collecting filter layer (6) is arranged adjacent to one side of the ground electrode (5), and a plurality of discharge units (4) of a discharge electrode, to which a voltage is applied to generate an ion wind inducing and forming a secondary flow with respect to the gas, is arranged on the other side of the ground electrode (5), with tips (4a) thereof being away from each other in a direction transverse to the flow path (8). The ground electrodes (5) has an aperture ratio that allows the secondary flow to pass along a cross section of the flow path orthogonal to the gas flow, and the dust-collecting filter layer (6) has an aperture ratio that allows the secondary flow to pass along the cross section of the flow path orthogonal to the gas flow and also allows the gas having flown into the dust-collecting filter layer to flow in the direction along the gas flow.
Abstract:
Un système de traitement d'air comprend une électrode (K) à effet de couronne et formée par un fil et une électrode cible (M) perméable à l'air et disposée concentriquement autour de l'électrode à effet de couronne. Ces électrodes sont connectées à une source de tension de courant continu (3), dont la tension provoque une décharge par effet de couronne au niveau de l'électrode à effet de couronne et un courant d'ions à travers l'électrode cible. L'électrode cible peut présenter une configuration essentiellement cylindrique, auquel cas de l'air s'écoule axialement dans l'électrode cible à travers l'une et/ou l'autre de ses extrémités ouvertes et sort de l'électrode cible dans un sens radial à travers sa paroi perméable à l'air. L'électrode cible peut également être divisée en au moins deux parties séparées (M1, M2) placées dans une disposition essentiellement concentrique autour de l'électrode à effet de couronne (K) de façon uniformément espacée l'une par rapport à l'autre. Dans ce cas, de l'air s'écoule dans un sens essentiellement radial vers l'intérieur à travers les espaces interstitielles compris entre les différentes parties (M1, M2) de l'électrode cible et sort dans une direction essentiellement radiale à travers lesdites parties.