Embodiments of the present disclosure may suppress conduction between an anode and a cathode caused by condensed water in an oil removal apparatus in which oil particles are collected in a filter disposed between the anode and the cathode. An insulating layer may be sandwiched either between the filter and at least one of the anode and the cathode of the bipolar electrode, or within the filter so as to extend in a flow direction of blow-by gas, and may have an insulating property so as to prevent condensed water generated when moisture in the blow-by gas condenses, from connecting the anode and the cathode of the bipolar electrode.

Embodiments of the present disclosure may suppress conduction between an anode and a cathode caused by condensed water in an oil removal apparatus in which oil particles are collected in a filter disposed between the anode and the cathode. An insulating layer may be sandwiched either between the filter and at least one of the anode and the cathode of the bipolar electrode, or within the filter so as to extend in a flow direction of blow-by gas, and may have an insulating property so as to prevent condensed water generated when moisture in the blow-by gas condenses, from connecting the anode and the cathode of the bipolar electrode.

A device and method include ionizing particles to be captured, creating electric fields to polarize mats of filter material, and trapping the ionized particles in the polarized mats.

A device and method include ionizing particles to be captured, creating electric fields to polarize mats of filter material, and trapping the ionized particles in the polarized mats.

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 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 ventilation device may include a first air treatment device and an ionizer. The ionizer may include an electrode. A counter-electrode of the ionizer may be electrically conductively connected to the first air treatment device.

A ventilation device may include a first air treatment device and an ionizer. The ionizer may include an electrode. A counter-electrode of the ionizer may be electrically conductively connected to the first air treatment device.

Provided is an air conditioning apparatus. The air conditioning apparatus includes a main body having a suction part through which air is suctioned and a discharge part through which the air suctioned through the suction part is discharged, a fan disposed within the main body to allow the air to flow, a filter device disposed between the suction part and the discharge part within the main body, the filter device including a filter including a plurality of arrays that are spaced apart from each other, and a power supply part to supply a voltage to each of the arrays. Each of the arrays includes a conductive member, the conductive member contacts a dielectric containing a dielectric material.

Provided is an air conditioning apparatus. The air conditioning apparatus includes a main body having a suction part through which air is suctioned and a discharge part through which the air suctioned through the suction part is discharged, a fan disposed within the main body to allow the air to flow, a filter device disposed between the suction part and the discharge part within the main body, the filter device including a filter including a plurality of arrays that are spaced apart from each other, and a power supply part to supply a voltage to each of the arrays. Each of the arrays includes a conductive member, the conductive member contacts a dielectric containing a dielectric material.