A dust collector includes a casing, a fan, a filtering element, an electric field generator and an electrostatic precipitator. The casing includes an inlet, an outlet and a channel. The channel is arranged between the inlet and the outlet. An ambient airflow is introduced into the channel through the inlet by the fan. Moreover, portions of suspended particles in the airflow are filtered off by the filtering element. The electric field generator generates an electric field. The suspended particles passing through the electric field generator have a first electrical polarity. The electrostatic precipitator has a second electrical polarity, wherein the first electrical polarity and the second electrical polarity are opposite. The suspended particles with the first electrical polarity are adsorbed by the electrostatic precipitator.

A membrane for collecting airborne particles, the membrane taking the form of a strip composed of a matrix formed from a mixture of a polymer and of a filler that is made of an electrical conductor, a hydrophilic layer for collecting particles, on which layer is deposited said matrix so as to form at least one composite layer, the membrane including at least one region obtained via a surface treatment of the hydrophilic layer.

A membrane for collecting airborne particles, the membrane taking the form of a strip composed of a matrix formed from a mixture of a polymer and of a filler that is made of an electrical conductor, a hydrophilic layer for collecting particles, on which layer is deposited said matrix so as to form at least one composite layer, the membrane including at least one region obtained via a surface treatment of the hydrophilic layer.

Easy-Air (-) Ion Generator: The present invention provides an electric device that creates ‘corona discharge’ for cleaning the air from airborne/atmospheric particulate matter including gaseous and biological contaminates. The invention uses high voltage DC current that performs two functions/phases: (1) The first function has two pairs of positive and negative polarity, therein for building a force field between the metal plates for attracting airborne particles, gaseous and biological contaminates that are incinerated. SEE FIG. #1. (2) The second function has negative current wires that goes across the force field, which comes into contact with the filtered air separating negative ions that flow into the room or local area. SEE FIG. #2. The negative ions attach themselves to any particulate matter including soot, tobacco smoke, smog, oil smoke, fly ash, cement dust, suspended atmospheric dust, settling dust, and heavy dust and with its increased molecular weight and pulls the particulate matter to the ground or surface reducing/related atmospheric particulate matter to enhance air quality. Any related airborne/atmospheric particles with a heavier molecular weight due to the negative ionization process are also attracted to the positive current force field and are re-filtered to enhance air quality. SEE FIG. #1. Additionally, the corona discharge is used to split the diatomic oxygen molecule into valent oxygen atoms. These oxygen atoms have a negative charge and will bond quickly with another oxygen molecule to produce ozone. For each split oxygen molecule 2 ozone molecules are produced. SEE FIG. #2.

Easy-Air (-) Ion Generator: The present invention provides an electric device that creates ‘corona discharge’ for cleaning the air from airborne/atmospheric particulate matter including gaseous and biological contaminates. The invention uses high voltage DC current that performs two functions/phases: (1) The first function has two pairs of positive and negative polarity, therein for building a force field between the metal plates for attracting airborne particles, gaseous and biological contaminates that are incinerated. SEE FIG. #1. (2) The second function has negative current wires that goes across the force field, which comes into contact with the filtered air separating negative ions that flow into the room or local area. SEE FIG. #2. The negative ions attach themselves to any particulate matter including soot, tobacco smoke, smog, oil smoke, fly ash, cement dust, suspended atmospheric dust, settling dust, and heavy dust and with its increased molecular weight and pulls the particulate matter to the ground or surface reducing/related atmospheric particulate matter to enhance air quality. Any related airborne/atmospheric particles with a heavier molecular weight due to the negative ionization process are also attracted to the positive current force field and are re-filtered to enhance air quality. SEE FIG. #1. Additionally, the corona discharge is used to split the diatomic oxygen molecule into valent oxygen atoms. These oxygen atoms have a negative charge and will bond quickly with another oxygen molecule to produce ozone. For each split oxygen molecule 2 ozone molecules are produced. SEE FIG. #2.

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.

An electrostatic air cleaner may be operated according to a manner designed to achieve acceptable air quality while balancing power usage and corona electrode degradation levels. The voltage applied to the corona electrode(s) may be controlled as well as the voltage applied to repelling electrodes and air flow velocity. The air cleaner may also be operated to achieve desired particle separation.

An electrostatic air cleaner may be operated according to a manner designed to achieve acceptable air quality while balancing power usage and corona electrode degradation levels. The voltage applied to the corona electrode(s) may be controlled as well as the voltage applied to repelling electrodes and air flow velocity. The air cleaner may also be operated to achieve desired particle separation.

Disclosed herein is provide an electrostatic precipitator capable of allowing a charger to be thin while suppressing ozone generation.

The electrostatic precipitator 1 includes a charger 10 provided with a high voltage electrode 11 receiving a high voltage from a high voltage generating circuit 40 and a counter electrode 12 facing the high voltage electrode 11 and receiving a reference voltage from the high voltage generating circuit 40, and configured to charge suspended particles by generating a discharge between the high voltage electrode 11 and the counter electrode 12; and a dust collector 20 disposed in the downstream side of an air flow direction of the charger 10 and configured to collect the suspended particles charged by the charger 10.

Provided is a solvent separation method and a solvent separation apparatus that make it possible to efficiently retrieve the thermal energy possessed by an exhaust atmosphere released in a solvent-removal step to suppress reductions in a temperature of the exhaust atmosphere. In the solvent separation method and the solvent separation apparatus, a vaporized solvent is removed from a gas while heat-exchange between the gas within a condensation part and the gas within a dust-collection part is conducted by using a heat exchange part that is placed between the condensation part that introduces the gas into a first direction and the dust-collection part that introduce the gas into a second direction opposite to the first direction the gas discharged from a downstream side of the condensation part.