An electrostatic air filter connected to a high voltage source, including an air flow channel, an ion generator, at least one corona electrode and at least one cumulative electrode, the corona electrodes and the cumulative electrodes are configured so that corona discharges occur between the corona electrodes and the cumulative electrodes due to a first potential difference, causing ionization of contaminant particles present in the air flow channel. A separator of contaminant particles is disposed in the air flow channel and includes input and output electrodes that enable the flow of air therethrough in a direction away from the input electrode to the output electrode and further to the channel outlet. During operation, there is a first potential difference between the corona and input electrodes and a second potential difference between the input and output electrodes, so that the electric field strength in the space between the input and output electrodes is directed opposite to that in the space between the ion generator and the input electrode.

An electrostatic air filter connected to a high voltage source, including an air flow channel, an ion generator, at least one corona electrode and at least one cumulative electrode, the corona electrodes and the cumulative electrodes are configured so that corona discharges occur between the corona electrodes and the cumulative electrodes due to a first potential difference, causing ionization of contaminant particles present in the air flow channel. A separator of contaminant particles is disposed in the air flow channel and includes input and output electrodes that enable the flow of air therethrough in a direction away from the input electrode to the output electrode and further to the channel outlet. During operation, there is a first potential difference between the corona and input electrodes and a second potential difference between the input and output electrodes, so that the electric field strength in the space between the input and output electrodes is directed opposite to that in the space between the ion generator and the input electrode.

The present disclosure provides a face shield that includes a frame supported by a head of the wearer and a transparent visor removably coupled to the frame. When coupled to the frame, the visor extends around the face of the wearer such that the visor covers at least one of a mouth, a nose, and eyes of the wearer. The face shield further includes an ion generator coupled to the frame. The ion generator generates and emits negatively-charged ions in a region of ambient air surrounding the mouth or the nose of the wearer such that negatively-charged ions charge particulate matter suspended in the region of ambient air. The face shield includes a positively- or negatively charged or grounded trap that collects or deflects the negatively-charged ions and the particulate matter charged by the negatively-charged ions.

The present disclosure provides a face shield that includes a frame supported by a head of the wearer and a transparent visor removably coupled to the frame. When coupled to the frame, the visor extends around the face of the wearer such that the visor covers at least one of a mouth, a nose, and eyes of the wearer. The face shield further includes an ion generator coupled to the frame. The ion generator generates and emits negatively-charged ions in a region of ambient air surrounding the mouth or the nose of the wearer such that negatively-charged ions charge particulate matter suspended in the region of ambient air. The face shield includes a positively- or negatively charged or grounded trap that collects or deflects the negatively-charged ions and the particulate matter charged by the negatively-charged ions.

An apparatus and test method for simulating spark discharge of a high-voltage electrostatic precipitator are provided. The simulation apparatus includes a pulse power supply configured to provide a test voltage, an anode cylinder configured to simulate an anode of a precipitator, a cathode rod configured to simulate a cathode of the precipitator, a pulse capacitor unit configured to simulate an electrode capacitor of the precipitator, an insulating support configured to hang the cathode rod, a voltage divider configured to measure an electrode voltage, and a grounded current sampling unit configured to measure grounded current. The simulation apparatus simulates a discharge process of the high-voltage electrostatic precipitator to measure discharge characteristic parameters such as discharge current and discharge energy of the high-voltage electrostatic precipitator. In this way, characteristics of spark discharge of the precipitator under different load conditions are simulated.

An apparatus and test method for simulating spark discharge of a high-voltage electrostatic precipitator are provided. The simulation apparatus includes a pulse power supply configured to provide a test voltage, an anode cylinder configured to simulate an anode of a precipitator, a cathode rod configured to simulate a cathode of the precipitator, a pulse capacitor unit configured to simulate an electrode capacitor of the precipitator, an insulating support configured to hang the cathode rod, a voltage divider configured to measure an electrode voltage, and a grounded current sampling unit configured to measure grounded current. The simulation apparatus simulates a discharge process of the high-voltage electrostatic precipitator to measure discharge characteristic parameters such as discharge current and discharge energy of the high-voltage electrostatic precipitator. In this way, characteristics of spark discharge of the precipitator under different load conditions are simulated.

The present invention relates to an electrostatic precipitator (ESP) system (1) for removal of particles from a flue gas flowing in a flow passage (4) being delimited by a primary collection in the form of a collection plate (5). The system comprises a discharge electrode (11) arranged in the flow passage and connected to a high voltage generator (12) providing for an electric field around the discharge electrode. The system further has a secondary collection electrode in the form of a grid (101) arranged within the collection plate and made of an electrically conductive material. The presence of such a grid improves the efficiency of the precipitator. In some embodiments, the ESP system comprises an actuator (112) for moving the grid upwards and letting it drop onto an internal bottom structure (109). The movement between the collection plate and the grid as well as the impact force imparted to the dropping grid both result in a removal of collected particles.

The present invention relates to an electrostatic precipitator (ESP) system (1) for removal of particles from a flue gas flowing in a flow passage (4) being delimited by a primary collection in the form of a collection plate (5). The system comprises a discharge electrode (11) arranged in the flow passage and connected to a high voltage generator (12) providing for an electric field around the discharge electrode. The system further has a secondary collection electrode in the form of a grid (101) arranged within the collection plate and made of an electrically conductive material. The presence of such a grid improves the efficiency of the precipitator. In some embodiments, the ESP system comprises an actuator (112) for moving the grid upwards and letting it drop onto an internal bottom structure (109). The movement between the collection plate and the grid as well as the impact force imparted to the dropping grid both result in a removal of collected particles.

An engine tail gas dust removing system has a tail gas dust removing system inlet, a tail gas dust removing system outlet, and a tail gas electric field device. The engine tail gas dust removing system has a good dust removal effect, and can efficiently remove particulate matters in engine tail gas.

Disclosed is a fine dust collecting device using a human body based electrostatic energy harvesting element. The fine dust collecting filter device includes an electrostatic energy harvesting element for collecting and generating current; a charging filter connected to the electrostatic energy harvesting element such that the charging filter is electrically charged to have a first polarity and thus electrically charges fine dust particles; a collecting filter connected to the electrostatic energy harvesting element such that the collecting filter is electrically charged to have a second polarity opposite to the first polarity; and a rectifier disposed between and connected to the electrostatic energy harvesting element, and the charging filter and the collecting filter.