The acoustic resonator combined with electrical discharges

Abstract

The acoustic resonator combined with electrical discharges of the present invention consists of a cylindrical discharge chamber (10) with an inlet (8) of gas to be treated, a grounded wire electrode (3) reaching in the discharge chamber (10) and connected to a potential, and a multiple needle electrode (4) formed by a system of needles connected with reverse potential. On one side of the discharge chamber (10), there is an inlet of acoustic wave source (7) while on the other side thereof, there is disposed a sliding reflector (2) with an opening (1) for discharge of the processed gas and a sliding mechanism (11) for arbitrary setting of the position thereof all over the length of the discharge chamber (10). The center of the multiple needle electrode (4) is situated within the discharge chamber (10) at a distance ({lambda/4}) from said sliding reflector (2). All needles are connected in electrically conducting manner via a common resistor (5) to a high-voltage power supply (6). The wire electrode (3), being electrically connected with a ground conductor outside the discharge chamber (10), is formed by a conductor of circular cross section disposed in the axis of the resonator discharge chamber (10), while the resonator center is situated counter the center of the multiple needle electrode (4). The length of the conductor in the discharge chamber (10 axis is greater than the double width of the multiple needle electrode (4) and the diameter thereof is at least ten times smaller than the inside diameter of the cylindrical discharge chamber (10).