An air purification system for purifying atmospheric air has an ionization chamber that includes a needle arrangement. The needles create a dense and strong electric field when a high voltage is passed to them by the effect of dual charge ionization due to which the suspended particles in the polluted air get clumped together and fall. The second invention is an air monitoring system facilitating a two-way communication with external information sources. It contains gas sensors comprising of an ambient noise sensor, temperature and humidity sensor, and sensors to measure the amount of oxides of nitrogen, Sulphur, carbon and size of suspended particles in the air. The third invention is a theft protection module for the safe keeping of an air purification system.

A system for removing dust from exhaust gas, comprising a dust removing system inlet, a dust removing system outlet, and an electric field apparatus (1021). The electric field apparatus (1021) comprises an electric field apparatus inlet, an electric field apparatus outlet, a dust-removing electric field cathode (10212) and a dust-removing electric field anode (10211). The dust-removing electric field cathode (10212) and the dust-removing electric field anode (10211) are used to generate an ionizing electric field for dust removal. When a certain amount of dust has accumulated on the electric field apparatus, the electric field apparatus performs a black carbon removal process, thereby avoiding a reduced electrode gap resulting from an increased thickness of black carbon.

A magnetic device for capturing metal wear particles in suspension in a lubrication fluid, the magnetic device being for inserting in a straight-line insertion direction of the magnetic device into a wall of a casing via a through orifice serving to put an inside volume of the casing containing the lubrication fluid into communication with an outside volume outside the casing, the magnetic device presenting a longitudinal axis X, the longitudinal axis X being for putting into coincidence with the direction for inserting the magnetic device into the casing, the magnetic device comprising a permanent magnet suitable for attracting the metal particles and a presence-detector member for detecting the metal particles attracted by the permanent magnet.

An electrostatic air cleaning device comprises a particle charging section, a particle precipitation section, a current sensor for measuring an electric current flowing through electrode plates of the precipitation section and a relative humidity sensor. The voltage applied to the electrode plates and the air flow through the device are controlled in dependence on the measured current flowing through the electrode plates. In this way, control is provided to prevent excessive electric leakage currents inside the precipitation section, that may lead to a hazard, and to optimize the energy efficiency of the cleaning device in relation to its cleaning performance. The relative humidity information also enables diagnosis of the cause of the high leakage current and the status of the precipitation section concerning the amount of precipitated particles therein.

An engine exhaust gas treatment system, comprising an exhaust gas dust removal system and an exhaust gas ozone purification system. The exhaust gas dust removal system comprises an exhaust gas dust removal system inlet, an exhaust gas dust removal system outlet, and an exhaust gas electric field apparatus (1021). The exhaust gas electric field apparatus (1021) comprises an exhaust gas electric field apparatus inlet, an exhaust gas electric field apparatus outlet, an exhaust gas dust removal electric field cathode (10212), and an exhaust gas dust removal electric field anode (10211). The exhaust gas dust removal electric field cathode (10212) and the exhaust gas dust removal electric field anode (10211) are configured to produce an exhaust gas ionized dust removal electric field. The engine exhaust gas treatment system is able to effectively remove particles in engine exhaust gas, and the purification treatment effect for engine exhaust gas is good.

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.

A DC power source operating portable human body carrying potential feedback electronic human breath filtration device is an electronic nose mask with directional ionic air filtration control and is the most ideal alternative to conventional filter paper type nose mask. It utilizes potential feedback electronic ionization technique and electrostatic field to remove air borne matters from human inhalation and exhalation breath. It has UV germicidal function and a micro electric fan to provide positive air pressure. It utilizes electromechanical potential feedback technology to improve the rate of ionization at lower voltage level to minimize the generation of Ozone; a moisture collection feature to absorb the condensation from the user's breath. It is light weight and connected to a pocket size control system via a connection cable and has an ionization flux sensing device for user to verify the present of the ionization.

An exhaust dust removal system includes an electric field device (1021) and a cooling device. The electric field device (1021) has an electric field device inlet, an electric field device outlet, a dust removal electric field cathode (10212), and a dust removal electric field anode (10211). The dust removal electric field cathode (10212) and the dust removal electric field anode (10211) are used to generate an ionizing dust removal electric field. The cooling device is used to reduce the exhaust temperature before the electric field device inlet. The exhaust dust removal system may help reduce greenhouse gas emissions, and may also help reduce emissions of harmful gases and pollutants, which thereby makes the gas emissions more environmentally friendly.

A portable air purifier device includes a fan, air purification system, air quality sensor module, air crossflow limiter and a head mount. The air purifier is mounted in the forehead/head area without blocking the user's nose, mouth or face area, making it easy to breathe. The air purification system consists of one or more Electrostatic Precipitators connected together, in series to achieve higher level of air purification efficiency or in parallel to achieve higher output air flow rate. The crossflow limiter blocks dirty air from the outside from displacing the cleansed air supplied by the device. The air quality sensor module automatically throttles the air purification up/down based on the air pollution level surrounding the user. The head mount is used to easily mount the air purifier device either directly onto the user's head or on top of any head-wear such as a helmet or a hat.

The invention addresses the problem of air filtration and decontamination as required immediately for the COVID-19 pandemic but also will be useful in a variety of applications. Air (1) to the apparatus (100) enters and passes through an optional pre-filter (2) and through a one-way air “check” valve (3). The incoming air (1) then enters the counter-flow heat exchange path (4) and proceeds towards the heating chamber (6). As air enters the heating chamber (6), it immediately encounters heating elements (7). Upon encountering the heating chamber (6), the incoming air, which has been pre-heated by the exiting air, is heated to the desired temperature and exits via the return path (5). Upon completing the path through the exit path for the air, the air is now cooled to the desired exit temperature, for example within a few degrees of the incoming air, and is at a temperature suitable to exit (11) and be delivered to a user. This air may not have the virus removed from it, but the virus will be rendered harmless at this point. The invention is applicable in other contexts. For example, the operation of these systems can generally be reversed to decontaminate air including air exhaled by a user. This may be used in conjunction with a mask worn by a patient or an isolation chamber at least partially enclosing a patient, e.g., a patient room(s) or a tent erected over a patient gurney or bed.