A carbon fiber charging device and an electrical appliance therefor are provided. The carbon fiber charging device includes a carbon fiber electrode configured to generate electrons and charge surrounding dust, a protective case configured to cover the carbon fiber electrode such that a foreign object having a size of a human finger is not able to contact the carbon fiber electrode, the protective case including a top wall facing a tip of the carbon fiber electrode and provided with a through hole and a side wall surrounding an outer circumferential surface of the carbon fiber electrode, and an electron generation stabilization device provided in the protective case and configured to allow the carbon fiber electrode to generate electrons stably.

This publication discloses an electrostatic filter construction, to be positioned in air ducts or ventilation channels, which electrostatic filter construction includes a charging unit, which charges the particles to be filtered into a first electric potential and arranged in the filter construction in the path of the air flow before filter elements, electrically conducting electrodes connected to a second electric potential different to the potential of the charged particles and set substantially parallel to the direction of the airflow, and bag shaped filter elements positioned after the charging unit in the path of the air flow. According to the invention each bag shaped filter element has at least one designated UV-light source and an element of photo catalytic material like TiO.sub.2.

A particle counter includes a ventilation path, an electric-charge generator that applies the electric charge to a particle in the gas that passes through the ventilation path to obtain a charged particle, a charged-particle-collecting electrode, a heater that is capable of heating the ventilation path, and a controller for performing a particle count detection process, wherein, when the process is performed, the controller obtains a flow rate of the gas on the basis of a calorific value that is supplied to the heater and a difference between the temperature of the gas and the temperature of the surface of the heater, with the heater heating the ventilation path, and obtains the count of the particle per unit volume in the gas on the basis of the flow rate of the gas and a physical quantity that varies depending on an electric charge amount of the charged particle.

An electrostatic precipitation module includes a plurality of conductive precipitation electrode plates and a plurality of non-precipitation electrode plates. The plurality of precipitation electrode plates are interlacedly distributed along the length of the first connecting rib; the precipitation electrode plates 1 are made from conductive plastic material by injection molding, and the metal conductor is embedded inside the first connecting rib by in-mold injection molding, so that a precipitation electrode plate module 9 is formed; a non-precipitation electrode plate module is formed by the similar structure. After the precipitation electrode plate module 9 and the non-precipitation electrode plate module 14 are assembled relatively, the precipitation electrode plates 1 and the non-precipitation electrode plates 10 form an electrostatic precipitation module 15. The present invention also discloses an electrostatic air purifier using the electrostatic precipitation modules which can be assembled quickly, improves the uniformity of electric field distribution and has excellent electrostatic absorption performance.

The present disclosure relates to an air supply arrangement for a vehicle, the air supply arrangement comprising an air supply duct, an ionising member located in the air supply duct and a passive collecting member located in the air supply duct downstream of the ionising member, wherein a shortest path length of an air flow between the ionising member and the collecting member is in the range of from 20 to 70 centimeters (cm), preferably in the range of from 25 to 50 cm. The disclosure further relates to an external portion of such an air supply arrangement and a vehicle with such an air supply arrangement.

This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

An electrostatic precipitator module and a desulfurization system are capable of easily discharging wash water from a wet electrostatic precipitator module. The electrostatic precipitator module includes an arrangement of discharge electrodes and collecting electrodes alternately disposed and spaced apart from each other, the discharge electrodes configured to be charged to a predetermined voltage for generating a corona discharge between the discharge electrodes and the collecting electrodes; and tie rods for fixing the discharge electrodes and the collecting electrodes. Each collecting electrode has a lower edge inclined downward with respect to the ground. The lower edge of each collecting electrode includes separate lower edge portions respectively inclined downward from opposite side ends of the collecting electrode and a lowermost point at which wash water is concentrated and discharged to a discharge guide installed directly under the lowermost points. The discharge guide has a width substantially smaller than the collecting electrode.

A dust collecting module for reducing vibration by maintaining a distance between electrodes includes an arrangement of discharge electrodes and dust collecting electrodes alternately disposed and spaced apart from each other, the discharge electrodes configured to be charged to a predetermined voltage for generating a corona discharge between the discharge electrodes and the dust collecting electrodes, at least one dust collecting electrode of the dust collecting electrodes having a first hole; a first hole jig received in the first hole and fixed to the at least one dust collecting electrode, the first hole jig having a larger thickness than the at least one dust collecting electrode; a first tie rod coupled to the discharge electrodes and configured to pass through and fix the discharge electrodes by being fitted into the first hole jig; and a second tie rod coupled to the dust collecting electrodes to fix the dust collecting electrodes.

A dust collecting module of a desulfurizing apparatus for removing sulfur oxides is easily installed and facilitates the application of a high voltage to discharge electrodes. The dust collecting module includes an arrangement of discharge electrodes and dust collecting electrodes alternately disposed and spaced apart from each other, the discharge electrodes configured to be charged to a predetermined voltage for generating a corona discharge between the discharge electrodes and the dust collecting electrodes; a first setting beam having a plurality of lower slots into which the discharge electrodes are securely inserted; and a lower frame extending in a stacking direction of the discharge electrodes to support the discharge electrodes, wherein the predetermined voltage is applied to the discharge electrodes through the lower frame and the first setting beam. The dust collecting module may further include an insulating connecting member from which the lower frame is suspended.

A hybrid composite discharge electrode (HCDE) (20) includes at least one metal layer (22) and at least one carbon fiber layer (26). The HCDE (20) improves the stability and uniformity of the corona while being corrosion-resistant, lightweight, and compact. Additionally, a method of making a HCDE (20) is provided. In another aspect, an electrostatic precipitator (60) is provided and includes a hybrid composite discharge electrode (62).