An ozone gas generator includes a first electrode portion that includes a first electrode, and a second electrode portion that faces the first electrode portion, is disposed with a predetermined interval at which discharge between the first electrode portion and the second electrode portion is possible, and includes a second electrode, in which at least one of the first electrode portion and the second electrode portion includes a dielectric that is provided on a surface of the first electrode or the second electrode on sides facing each other, and at least one of the first electrode portion and the second electrode portion includes a layer that is provided on at least a portion of the surface of the first electrode or the second electrode on the sides facing each other, or the dielectric, and includes at least one of a metal or a metal compound, and the first electrode portion and the second electrode portion are configured such that accuracy of an interval between surfaces facing each other is ±3% or more and ±50% or less.

The present invention provides a cold plasma ozone generator, comprising: an inlet gas port; at least one in-electrode, said in-electrode having a plurality of holes substantially at a perimeter of the same; said plurality of perimeter holes are in fluid communication with said inlet gas port, said plurality of perimeter holes configured to allow said dry gas to pass therethrough; at least one out-electrode, said out-electrode having at least one hole at the center of the same, said at least one hole configured to allow gas to pass therethrough; said in-electrode and said out-electrode configured to maintain said high voltage AC therebetween; at least one spacer between said in-electrode and said out-electrode, said spacer configured to maintain a constant-width gap between said in-electrode and said out-electrode; an outlet port.

An electrical discharge ozone generation cell has first and second electrode base plates which are separated by a nonconductive flat spacer plate. Within a central opening in the spacer plate is fitted an electrode plate in close contact with the first electrode base plate. A dielectric plate in close contact with the second electrode base plate and with the spacer plate helps define a gas discharge chamber with the interior edges of the spacer plate and the electrode plate. Gaskets on the two sides of the spacer plate around the central opening displaced away from the interior edges of the spacer plate ensure a gas seal for the electrical discharge chamber.

An ozone generator with a high voltage electrode and at least one counter electrode which limit a gap in which at least one dielectric and an electrically non-conductive structure are arranged and through which a stream of gas flows in a direction of flow. The high voltage electrode and the at least one counter electrode are provided with a connection for an electrical voltage supply in order to generate silent discharges. The electrically non-conductive structure contains pores with a nominal pore size (x) of 100 m<x<1 mm.

A device for generating ozone from oxygen-containing gas by silent electric discharge, the device including an electrode arrangement having at least one high-voltage electrode and at least one annular ground electrode. An annular dielectric is arranged between the at least one high-voltage electrode and the at least one ground electrode. The at least one high-voltage electrode is surrounded by at least one annular heat pipe.

A device for generating ozone from oxygen-containing gas by silent electric discharge. At least two high-voltage electrodes and at least one ground electrode are nested. A discharge gap is defined between each high-voltage electrode and adjacent ground electrode. A dielectric is arranged in each discharge gap. In one embodiment, at least two discharge gaps are traversed by the gas, and a different voltage is applied to each gap according to the individual gap width. In another embodiment, filler material is arranged in an interstice between the high-voltage electrode and the corresponding dielectric, and the same amount of power is applied to each discharge gap.

A device for generating ozone from oxygen-containing gas by silent electric discharge, the device including an electrode arrangement having at least one high-voltage electrode and at least one annular ground electrode. An annular dielectric is arranged between the at least one high-voltage electrode and the at least one ground electrode. The at least one high-voltage electrode is surrounded by at least one annular heat pipe.

Six gas generator units each including a gas generator, one unit of multiple AC power supply section that supplies six high frequency AC voltages to the six gas generator units, one unit of gas control section that controls raw material gas and output gas in the six gas generator units, and one unit of control/operation section constituting section that performs an AC power control operation to allow six high frequency AC voltages having desired electric energy, independent from each other, to be supplied. The six gas generator units, one unit of multiple AC power supply section, one unit of gas control section, and one unit of control/operation section constituting section are integrally provided.

A water treatment apparatus includes: a plurality of plate-shaped ground electrodes; a high-voltage electrode unit having counter electrode portions opposing the ground electrodes, support portions supporting the counter electrode portions, and a voltage receiving portion for receiving a high voltage; a water supply unit for supplying to-be-treated water to between the ground electrodes from above, insulating members each having a lower end portion fixed to a support structure fixing lower end portions of the ground electrodes, and an upper end portion connected to the voltage receiving portion of the high-voltage electrode unit. The lower ends of the support portions of the high-voltage electrode unit are held in a space between the ground electrodes, and a portion where each insulating member and the high-voltage electrode unit are connected to each other is located above the water supply unit, so that electric leak due to the to-be-treated water is inhibited.

An apparatus comprising a cold-plasma ozone generator, the ozone generator comprising: a non-arcing non-coronal ozone production cell capable of generating ozone; the ozone production cell having a pair of electrodes placed on two sides of the production cell and spaced apart by an electrode gap, and a dielectric layer on each of the electrodes facing inward into the ozone production cell; a high-voltage pulse generator attached to the electrodes and configured for producing a glow discharge cold plasma between the electrodes, the high-voltage pulse generator being able to produce sufficient voltage to generate the glow discharge cold plasma; a cooling system attached to each of the electrodes; and an oxygen source adapted to provide gas flow through the production cell in the gap between the pair of electrodes that efficiently generates ozone in the cold plasma, wherein the dielectric layers are intimately and directly bonded to each of the electrodes.