A dust collection assembly (100) comprises a first annular ring (110) and a second annular ring (120). The first annular ring (110) is provided with a first electrical connection member (113) for connection to either the positive pole or the negative pole of a power source; the second annular ring (120) is disposed both separatedly from and insulatedly from the first annular ring (110); the second annular ring (120) is provided with a second electrical connection member (123) for connection to the other of the positive or negative poles of the power source. Also disclosed are an air purification device and an air conditioner comprising the present dust collection assembly (100).

An airborne particle collection system includes an airflow directing unit, register units, a fan unit, and a control system. The airflow directing unit includes a plurality of separately controlled air distribution segments. Each register unit includes a motorized damper and filter. The fan unit is connected to the airflow directing unit and to the register units through piping. The fan unit injects air into the airflow directing unit, and generates a vacuum force that causes exhaust air with airborne particles to be pulled into the register units and filtered by the filters within the register units. The control system selectively controls the air distribution segments of the airflow directing unit and the motorized dampers of the register units to generate alterable airflow patterns between the airflow directing unit and the register units in different zones within a room in which the airflow directing unit and the register units are disposed.

An airborne particle collection system includes an airflow directing unit, register units, a fan unit, and a control system. The airflow directing unit includes a plurality of separately controlled air distribution segments. Each register unit includes a motorized damper and filter. The fan unit is connected to the airflow directing unit and to the register units through piping. The fan unit injects air into the airflow directing unit, and generates a vacuum force that causes exhaust air with airborne particles to be pulled into the register units and filtered by the filters within the register units. The control system selectively controls the air distribution segments of the airflow directing unit and the motorized dampers of the register units to generate alterable airflow patterns between the airflow directing unit and the register units in different zones within a room in which the airflow directing unit and the register units are disposed.

An object of the present invention is to suppress a blockage caused by oil particles in an upstream side of a filter in an oil removal apparatus that collects oil particles in a filter disposed between an anode and a cathode. While an internal combustion engine is operative, application of a voltage to a bipolar electrode is controlled such that a voltage application period, in which the voltage is applied to the bipolar electrode, and a voltage application stoppage period, in which application of the voltage to the bipolar electrode is stopped, are repeated alternately at predetermined periodic intervals.

An air filter arrangement is provided for filtration of particles in an airflow having an airflow direction. The air filter arrangement includes an electrostatically charged filter, a first ionization device, and a second ionization device. The first ionization device is arranged upstream of the electrostatically charged filter and the second ionization device is arranged downstream of the electrostatically charged filter. An air filtering apparatus is also described.

An air purification apparatus (100) for purifying air in a target space external to the apparatus is disclosed that comprises at least one pollutant removal structure (130; 131, 132) for removing a pollutant from the air in fluid connection with a major vent (110) and a directional vent arrangement comprising a directional inlet (112) for drawing air into the air purification apparatus from a region of the target space in an aiming direction of the directional inlet; and a directional outlet (114) for expelling air in a further aiming direction towards the region. An air movement device (120; 121, 122) configured to move air from the directional inlet to the major vent in a first configuration and to move air from the major vent to the directional outlet through the at least one pollutant removal structure in a second configuration responsive to a controller (150) is also present, as well as a sensor (140) arranged to determine a concentration of the pollutant in the air in said region when the air movement device is in the first orientation, wherein the controller is responsive to the sensor and is adapted to switch the air movement device from the first configuration to the second configuration upon the concentration of the pollutant exceeding a defined pollutant concentration threshold.

The invention relates to a cleaning device for cleaning a gas, in particular air, comprising: a first electrode which is populated with at least one element, preferably a plurality of elements, said at least one element having a surface with a plurality of tips and/or protrusions in order to generate a non-homogeneous electromagnetic field, a second electrode which preferably lies opposite the first electrode, and a voltage source which is electrically connected to the first electrode and/or the second electrode and by means of which a voltage can be built up between the first electrode and the second electrode.

The present invention discloses an electrostatic air cleaner, comprising an upper filter screen, an electrode a, a tungsten wire, a spring, a main body, an ionization generator, a lower filter screen, an electrode b and an electrode c. The main body is a hollow structure, and the upper end of the main body is buckled with the upper filer screen and the lower end of the main body is buckled with a lower filter screen. A tungsten wire fixed at the upper end of the main body is provided at the inner side of the upper filter screen and the both ends of the tungsten wire are respectively connected with a spring, and the tungsten wire is tensioned by the spring to prevent sagging or deformation, wherein one spring is hitched on the electrode a, the electrode a is fixed on the upper end of the main body, and the main body is provided with an ionization generator. The ionization generator is disposed on the lower side of the tungsten wire and connected to the tungsten wire; the lower end of the main body is further provided with an electrode b and an electrode c arranged side by side. The electrode b and electrode c are connected to the ionization generator and disposed at the upper side of the lower filter screen. Its structure is simple and scientific, convenient to use, without consumables and replacing parts, with low cost and energy saving, good cleaning effect. Therefore, the invention can meet the market demands and it is worthy of promotion in the markets.

An air conditioning apparatus according to an aspect of the present invention includes a main body including 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 in the main body to allow the air to flow, an electric charge device coupled to the main body outside the main body to charge dust in the air, and a filter device disposed between the suction part and the discharge part in the main body to collect the charged dust particles.

The present invention relates to a filter apparatus (1) for dedusting gas comprising one or more electrostatic precipitators (100), in each of said electrostatic precipitators (100) there being inserted at least one filtering unit (300) comprising, in turn, a plurality of filtering cells (301), e.g. of the wall flow type. The present invention also relates to a dedusting process for treating industrial gas. In particular, the dedusting process according to the present invention implemented by the filter apparatus having improved dusting efficiency, which is the object of the present invention, allows the treatment of gas coming from industrial processes, such as coal boilers, cement works, incinerators and like.