Ozone generator (1) for generating ozone comprising at least one high voltage electrode HVE (2), two low voltage electrodes LVE (3), at least one dielectric (4) and an electric isolator (25) placed in an area between the two LVE (3′, 3″). The generator (1) further comprises a first gap (7) and a second gap (8) and at least one of the gaps (7, 8) is a corona chamber. The at least one dielectric (4) comprising a first surface (9) is turning towards a HVE-surface (22) and an opposite second surface (10) is turning towards a first surface (17) of one of the LVE (3). The second surface (10) of the dielectric (4) is directly or indirectly supported in its full extension by the first LVE-surface (17), and at least one of the gaps (7, 8) is placed between the first surface (9) of the dielectric (4) and a first HVE-surface (22), said gap is a corona-chamber adapted to develop ozone.

A system for providing an acidic ionized ozonated liquid. The system includes a liquid inlet arranged to accept a liquid into the system; an acid-based cation-exchange resin in fluid communication with the liquid inlet, the resin adapted to exchange cations in the accepted liquid with H+ ions on the resin; an ozone dissolving apparatus in fluid communication with the liquid inlet and the acid-based cation-exchange resin; and a liquid outlet in fluid communication with the liquid inlet, the acid-based cation-exchange resin and the ozone dissolving apparatus. The ozone dissolving apparatus and the acid-based cation-exchange resin cooperating to produce the acidic ionized ozonated liquid for dispensation out of the system via the liquid outlet.

A system for providing an acidic ionized ozonated liquid. The system includes a liquid inlet arranged to accept a liquid into the system; an acid-based cation-exchange resin in fluid communication with the liquid inlet, the resin adapted to exchange cations in the accepted liquid with H+ ions on the resin; an ozone dissolving apparatus in fluid communication with the liquid inlet and the acid-based cation-exchange resin; and a liquid outlet in fluid communication with the liquid inlet, the acid-based cation-exchange resin and the ozone dissolving apparatus. The ozone dissolving apparatus and the acid-based cation-exchange resin cooperating to produce the acidic ionized ozonated liquid for dispensation out of the system via the liquid outlet.

An ozone water production device (1) includes: flow rate controllers (4, 5) that each control a flow rate of gas which is a raw material; a flow rate meter (12) that measures a flow rate of water which is a raw material; a booster pump (13) that controls pressure of the water; an ozone water generating unit (8) that generates ozone water by mixing ozone gas and the water; and a pressure sensor (17) that measures pressure of the ozone water which is to be supplied to a use point (19). The booster pump (13) controls the pressure of the water such that the pressure of the ozone water measured by the pressure sensor (17) is constant. The flow rate controllers (4, 5) each control the flow rate of the gas in accordance with the flow rate of the water measured by the flow rate meter (12).

An ozone water production device (1) includes: flow rate controllers (4, 5) that each control a flow rate of gas which is a raw material; a flow rate meter (12) that measures a flow rate of water which is a raw material; a booster pump (13) that controls pressure of the water; an ozone water generating unit (8) that generates ozone water by mixing ozone gas and the water; and a pressure sensor (17) that measures pressure of the ozone water which is to be supplied to a use point (19). The booster pump (13) controls the pressure of the water such that the pressure of the ozone water measured by the pressure sensor (17) is constant. The flow rate controllers (4, 5) each control the flow rate of the gas in accordance with the flow rate of the water measured by the flow rate meter (12).

A power supply that supplies power to a capacitive load comprises: a converter; an inverter; a resonant transformer; a detector configured to detect output frequency or output current and output voltage; and a controller configured to control the inverter, wherein the controller is configured to: calculate output power; adjust the output frequency within a predetermined frequency search range, adjust the output voltage within a predetermined voltage search range, and specify, as a frequency target value, a minimum value of the output frequency with which the output power reaches predetermined output power; and control the inverter so that the output frequency will be the frequency target value, adjust the output voltage within the predetermined voltage search range, and specify, as a voltage target value, a value of the output voltage with which the output power is target output power.

A ventilation system includes a line system which is designed to guide an air stream and to provide the air stream during normal operation via an outlet of the line system for supplying a space. The ventilation system includes a generating unit which is designed to produce reactive oxygen species during a cleaning operation and to feed the same to the air stream conducted in the line system. Also disclosed are methods for operating such a ventilation system and a generating unit for such a ventilation system.

In an ozone generating system in which an intermittent operation is performed, in which an ozone generating operation period in which ozone is generated by discharging gas which contains oxygen in a discharge space of an ozone generating apparatus and an ozone generating operation standby period in which gas is sealed in an ozone generating apparatus and discharge is stopped so as not to generate ozone are performed repeatedly, an absorbent which absorbs at least one of nitric acid and nitrogen oxide is provided in an ozone generating apparatus other than the discharge space.

In an ozone generating system in which an intermittent operation is performed, in which an ozone generating operation period in which ozone is generated by discharging gas which contains oxygen in a discharge space of an ozone generating apparatus and an ozone generating operation standby period in which gas is sealed in an ozone generating apparatus and discharge is stopped so as not to generate ozone are performed repeatedly, an absorbent which absorbs at least one of nitric acid and nitrogen oxide is provided in an ozone generating apparatus other than the discharge space.

A power supply apparatus outputs an alternating-current voltage to a plasma generator being a capacitive load and the power supply apparatus has a configuration that a transformer included in the power supply apparatus has a secondary-side magnetizing inductance more than five times as great as a leakage inductance.