Present embodiments relate to ionization of air flow within heating, ventilation and air conditioning (HVAC) systems. More specifically, but without limitation, present embodiments relate to ionization systems, for example bipolar ionization, which are controlled in part by a signal from or powered by the blower motor controller of the HVAC system so that the ionization system functions when the blower is on.

An air treatment device includes a casing with an air inlet and an air outlet. Air flows through the casing and an air treatment section in the casing. The air treatment section includes a fan for generating a flow of air from the air inlet to the air outlet, a filtering means arranged within the flow of air, a first pressure sensor to measure a first pressure in the flow of air, a second pressure sensor to measure a second pressure in a room or cabin surrounding the air treatment device, and a control unit. The control unit is configured to adapt a speed of the fan based on the measured first pressure and the measured second pressure to control a flow of air through the air treatment device.

Disclosed herein is an electrostatic precipitation method using an electrostatic precipitator including a collection module having a collection electrode and a discharge electrode, a housing having an internal partition wall formed therein, an inlet-side passage switching member, and an outlet-side passage switching member. The electrostatic precipitation method includes collecting dust by applying a voltage to the discharge electrode while gas flows, closing some of the flow spaces, divided by the internal partition wall using the passage switching members, and performing dust collection for one of the opened flow spaces by applying a voltage to the discharge electrode therein, and performing washing for at least one of the closed flow spaces by supplying washing water to the collection electrode therein.

This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

The present invention relates to an air conditioner including a dust collecting filter assembly for collecting foreign substance from the air sucked in through an inlet. The dust collecting filter assembly includes a high-voltage electrode film, a ground electrode films alternately disposed to face the high-voltage electrode film, a separator film disposed between the high-voltage electrode film and the grounding electrode film so that the high-voltage electrode film and the grounding electrode film are spaced apart by a predetermined interval, and a fastening part to fasten the high-voltage electrode film, the ground electrode film, and the separator film together and integrate them. With this configuration, it is possible to simplify the manufacturing process of the dust collecting filter assembly provided in the air conditioner, minimize the distance between the high-voltage electrode film and the ground electrode film, and improve the dust collection performance by improving a dust collection area by the separator film.

The invention relates to a method and an apparatus for measuring particle concentrations in an aerosol. The apparatus comprises means (103) for driving flow (105) into apparatus (101), means (115) for electrically charging particles (109) to become electrically charged particles (123) by ions (113) produced by a charger, means (117) for removing free ions (113) which are not attached to the electrically charged particles (123), and means (119) for measuring electrical current carried by the electrically charged particles (123). The means (115) for charging the particles and the means (119) for measuring electrical current carried by the electrically charged particles (123) are dimensioned such that the means (119) for measuring electrical current carried by the electrically charged particles (123) only measures a part of a total current carried by the particles.

A method for electrostatic water condensation of wet air, comprising: a large number of positive and negative charges are respectively generated in two zones by means of positive and negative corona discharge; wet air enters independent positive and negative corona zones to cause water molecules to carry positive and negative charges, respectively; and after mixing, water molecules carrying positive and negative charges are attracted to each other and condense under the action of Coulomb force. An apparatus for electrostatic water condensation of wet air, comprising a trumpet-shaped inlet, an airflow distribution plate, a positive charge generator, a negative charge generator, a condenser, and a trumpet-shaped outlet, the condenser being disposed at the rear end of the positive charge generator and negative charge generator in the airflow direction. The method and apparatus for electrostatic water condensation of wet air can recycle water vapor while dehumidifying.

An apparatus for treating air, such as an air humidifier, air cleaner, air washer or the like, may include a rinse-around body around which liquid rinses, an air conduction system arranged to stream the air to be treated against the rinse-around body, and an electrostatic precipitator assigned to the rinse-around body such that solid and/or liquid particles are precipitated from the air to be treated streaming against the rinse-around body and that the precipitated particles enter the liquid.

An electrostatic precipitating apparatus for a cooling tower is provided. The precipitating apparatus include an electrostatic precipitator including a plurality of discharge electrodes to which a voltage is applied and a plurality of electrostatic precipitating electrodes each disposed between the discharge electrodes and grounded, a washing water supply spraying the washing water to the electrostatic precipitator, and a frame assembly supporting the electrostatic precipitator. The electrostatic precipitator includes a first setting beam having a plurality of lower slots into which the discharge electrodes are fixedly inserted, and the frame assembly includes a lower frame extending in a stacking direction of the discharge electrodes to support the first setting beam, via which a voltage is applied to the discharge electrode.

Disclosed herein is a dust collecting tower apparatus that includes a housing having an inlet, into which gas is introduced, and an outlet from which the gas is discharged, and a collection module disposed in the housing and configured to collect particulates with a corona discharge. The collection module includes a plurality of discharge electrodes, to which a voltage is applied, a plurality of collection electrodes disposed between the respective discharge electrodes, where the collection electrodes is grounded, and a first setting beam having a plurality of lower slots into which the discharge electrodes are inserted. The apparatus further includes a washing water feeder configured to spray washing water to the collection module.