An air purifier includes: a case having an air inlet and an air outlet; a tank that stores a liquid, the tank disposed in the case; a plasma generator that generates a plasma which is to be in contact with the liquid, the plasma generator including a pair of electrodes and a power supply which applies a voltage between the pair of electrodes; a fan that generates an air flow from the air inlet to the air outlet; a filter through which the air flow comes into contact with the liquid, the filter disposed in the case; and a controller that causes the power supply to start application of the voltage, and causes the fan to start generation of the air flow after elapse of a predetermined time period since the start of the application of the voltage.

An air purifier includes a case that includes an air inlet and an air outlet, a tank that is arranged in the case and stores liquid, a fan that causes an air flow from the air inlet to the air outlet to be produced, a partition that is arranged in the case and includes a filter that causes the air flow and the liquid to come into contact with each other while allowing the air flow to pass through the filter, and a plasma generator that includes a pair of electrodes arranged in a first space between the air inlet and the partition and a power supply and generates plasma so that the plasma comes into contact with the liquid.

A space purification device according to the present disclosure includes: electrolysis bath; water supply unit; electrode unit (140); first calculator (510) that calculates an increased concentration of hypochlorous acid water per unit time based on (i) a first sodium chloride concentration that is a sodium chloride concentration in the electrolysis bath after the sodium chloride concentration has changed due to an input of the electrolysis accelerator into the electrolysis bath and (ii) hypochlorous acid generation efficiency per unit time set in advance; second calculator (512) that calculates, based on a target hypochlorous acid water concentration in the electrolysis bath, a first hypochlorous acid water concentration that is a hypochlorous acid water concentration in the electrolysis bath before energization by electrode unit (140), and the increased concentration of hypochlorous acid water per unit time calculated by first calculator (510), a required energization time for achieving the target hypochlorous acid water concentration; and electrode controller (540) that performs energization in electrode unit (140) for the required energization time calculated by second calculator (512).

A control circuit arrangement for a water negative ion generating device includes a water mist generating circuit for driving the generation of negative ion water mist, and a high voltage charging circuit for supplementing electrons to the negative ion water mist generated by the water mist generating circuit, wherein the water mist generating circuit and the high voltage charging circuit are grounded together, thereby ensuring that the two circuits work normally and produce negative ions.

An airborne virus protection and disinfection (AIRVPD) device includes positive and negative electrodes arranged to form an electrode fluid path therebetween and a high-voltage converter configured to deliver power to the positive and negative electrodes to trigger a redox reaction. The AIRVPD device also includes a chemical disinfecting unit having a sponge material associated with at least one of the positive and negative electrodes and capable of becoming impregnated with an antimicrobial capable of killing airborne viruses. The AIRVPD device further includes a housing encasing the positive and negative electrodes, the high-voltage converter, and the chemical disinfecting unit. The housing includes an inlet and an outlet in fluid communication with each other via the electrode fluid path. Ionized air with charged droplets external to the AIRVPD device is able to flow through the AIRVPD device for disinfection and neutralization.

An energy-independent water-based pure air cleaning system using a water electrolytic-fuel cell is disclosed. The energy-independent water-based pure air cleaning system using a water electrolytic-fuel cell proposed by the present invention comprises: a water electrolysis unit that generates hydrogen and oxygen through a water electrolysis treatment using supplied water, and supplies hydrogen gas to an energy generating unit by adjusting the pressure of the generated hydrogen gas; the energy generating unit that generates electrical energy on the basis of the hydrogen gas supplied for use as a power source for air purification; an energy storage unit that does not need energy charging and supplies the generated electrical energy as power for air purification; an oxygen exhaust port for discharging the oxygen generated in the water electrolysis unit for air purification; and a humidifier that generates water vapor by spraying or evaporating the supplied water by any one of ultrasonic vibration, heating, natural evaporation, or nozzles to control the humidity in a room.

The present invention relates to a system and method for treating air and water in refrigerated spaces using ozone-based disinfection. The system includes an electrolytic ozone generator configured to produce gaseous ozone from water and an air circulation subsystem to create an oxidizing airflow within a housing. The airflow is directed across a titanium dioxide-coated surface to reduce ozone concentration before reentry into the refrigerated space. A controller manages disinfection and purification modes, enabling safe air treatment in environments such as ice machines, walk-in refrigerators, and consumer appliances. In some embodiments, aqueous ozone is also routed to ice makers or water dispensers for waterline disinfection. Optional features include manganese dioxide treatment modules for hydroxyl radical generation, automated door locking during disinfection, and ozone sensors for safety compliance. The invention enables programmable, sensor-driven, and safe disinfection cycles without requiring external ozone emission, supporting food safety and occupant protection.

The present invention relates to a hygienization generator system and method for producing customized disinfection solutions by combining aqueous ozone and alkaline water. The system includes an aqueous ozone generator with an ion exchange material and electrolysis unit, an alkaline water generator capable of producing water with adjustable pH levels, and a mixer to form a homogeneous solution. A control system dynamically adjusts ozone concentration and pH levels based on user inputs or preconfigured settings, with real-time feedback provided by integrated sensors. The system features a user interface for parameter selection, remote monitoring capabilities, and optional microfoaming technology to enhance solution efficacy. Applications include surface sanitization, produce washing, dental water line disinfection, and biofilm removal in industrial piping. The portable configuration supports on-site use with modular dispensing options. This invention overcomes prior shortcomings, offering precise, eco-friendly, and versatile disinfection solutions.

The present invention relates to modular ozone-based disinfection systems that generate hydroxyl radicals from gaseous ozone and water vapor using a manganese dioxide treatment module. A sealed, replaceable water cartridge supplies water to an electrochemical ozone generator, producing gaseous ozone for introduction into an airflow path within a housing. An air circulation subsystem directs the ozone-containing airflow across the manganese dioxide treatment module, which catalytically generates hydroxyl radicals and reduces residual ozone to levels safe for human exposure. In some embodiments, a positive temperature coefficient (PTC) heating element preheats airflow to enhance radical production. A controller manages ozone generation, airflow, heating, and operational modes, and may track cartridge usage, transmit data, or enforce geofencing. The modular design supports various water sources, portable or fixed installation, and integration into refrigerated or enclosed spaces, providing safe, on-demand oxidizing treatment of air, surfaces, and water systems while ensuring compliance with exposure limits.

The present invention relates to a hygienization generator system and method for producing customized disinfection solutions by combining aqueous ozone and alkaline water. The system includes an aqueous ozone generator with an ion exchange material and electrolysis unit, an alkaline water generator capable of producing water with adjustable pH levels, and a mixer to form a homogeneous solution. A control system dynamically adjusts ozone concentration and PH levels based on user inputs or preconfigured settings, with real-time feedback provided by integrated sensors. The system features a user interface for parameter selection, remote monitoring capabilities, and optional microfoaming technology to enhance solution efficacy. Applications include surface sanitization, produce washing, dental water line disinfection, and biofilm removal in industrial piping. The portable configuration supports on-site use with modular dispensing options. This invention overcomes prior shortcomings, offering precise, eco-friendly, and versatile disinfection solutions.