The present invention relates to a respirator without breathing resistance, which has an air inlet duct that passes through an inside and an outside of the respirator and that has asymmetrical electrodes and particle capturing plates formed on an inner surface of the air inlet duct; ozone removing element that removes ozone generated by micro-plasma; and high voltage dc-dc converter that provides high voltage to the asymmetrical electrodes. It employs asymmetrical electrodes and particle capturing plates to filter air without generating breathing resistance. When the respirator according to the present invention is used, safety of a wearer may be maintained in accordance with an environment and breathing may be smoothly performed even while introduction of pathogenic bacteria, viruses, fungi, spores, fine dust, or the like included in air may be effectively blocked. Accordingly, the respirator may be widely utilized to maintain the safety of the wearer in various environments.

The present invention relates to a respirator without breathing resistance, which has an air inlet duct that passes through an inside and an outside of the respirator and that has asymmetrical electrodes and particle capturing plates formed on an inner surface of the air inlet duct; ozone removing element that removes ozone generated by micro-plasma; and high voltage dc-dc converter that provides high voltage to the asymmetrical electrodes. It employs asymmetrical electrodes and particle capturing plates to filter air without generating breathing resistance. When the respirator according to the present invention is used, safety of a wearer may be maintained in accordance with an environment and breathing may be smoothly performed even while introduction of pathogenic bacteria, viruses, fungi, spores, fine dust, or the like included in air may be effectively blocked. Accordingly, the respirator may be widely utilized to maintain the safety of the wearer in various environments.

An electronic air cleaner includes a control housing including an ion generation device and a brush array having at least one brush assembly extending therefrom. The brush array is connectable to the control housing in both a first configuration and a second configuration.

An electronic air cleaner includes a control housing including an ion generation device and a brush array having at least one brush assembly extending therefrom. The brush array is connectable to the control housing in both a first configuration and a second configuration.

The method for monitoring the signal quality of an electrostatic precipitator comprises measuring in real time at least one feature of a primary electric power sent to a transformer of the electrostatic precipitator and/or at least one feature of a secondary electric power sent to the collecting electrodes and discharge electrodes of the electrostatic precipitator, elaborating the at least a measured feature generating an information indicative of the electrostatic precipitation signal quality, providing the information.

The method for monitoring the signal quality of an electrostatic precipitator comprises measuring in real time at least one feature of a primary electric power sent to a transformer of the electrostatic precipitator and/or at least one feature of a secondary electric power sent to the collecting electrodes and discharge electrodes of the electrostatic precipitator, elaborating the at least a measured feature generating an information indicative of the electrostatic precipitation signal quality, providing the information.

An electrostatic air cleaner may include a corona charging stage, a precipitation stage, and an air mover (fan). The corona charging stage may include a first and second array placed under electrical potential difference capable of generating a corona discharge. The first array may be substantially parallel corona wires and may be located downstream of an air penetrable second array. The precipitation stage may be downstream from the corona charging stage. The spacing between the first array and the second array may be less than the distance of the precipitation stage to the second array. The air mover may be upstream of the corona charging stage or downstream of the precipitation stage or between these stages. The arrangement allows for higher ion output downstream of the first array with the same voltage and power consumption resulting in greater particle charging and better air cleaning efficiency.

A flexible electrode assembly for an air treatment device comprising: a flexible dielectric layer forming an insulating sheet; a plurality of conductive tracks on a first side of the insulating sheet; a conductive layer on a second side of the insulating sheet; wherein supply of voltage to the conducting tracks and the conductive layer generates plasma which is discharged from the conducting tracks. In a further aspect, the present invention also provides an air treatment apparatus for removal of health threatening airborne pollutants, which may include pathogens, from an air flow, the air treatment apparatus comprising an apparatus having a generally cyclonic-shaped geometry comprising a cylindrical section and a conical section. The present invention also relates to an air treatment device comprising the flexible electrode assembly.

A flexible electrode assembly for an air treatment device comprising: a flexible dielectric layer forming an insulating sheet; a plurality of conductive tracks on a first side of the insulating sheet; a conductive layer on a second side of the insulating sheet; wherein supply of voltage to the conducting tracks and the conductive layer generates plasma which is discharged from the conducting tracks. In a further aspect, the present invention also provides an air treatment apparatus for removal of health threatening airborne pollutants, which may include pathogens, from an air flow, the air treatment apparatus comprising an apparatus having a generally cyclonic-shaped geometry comprising a cylindrical section and a conical section. The present invention also relates to an air treatment device comprising the flexible electrode assembly.

An apparatus for improving vehicle internal air may include an air conditioner including an intake door for controlling introduction of external air into a vehicle; an electric dust collection filter to collect fine dust contained in air; and a control device to control operation of the electric dust collection filter and the intake door, based on information about a concentration of fine dust inside the vehicle, a concentration of fine dust outside the vehicle, and a vehicle speed.