A braking system for safely collecting brake dust produced by operation of a braking mechanism. The braking system comprises a collector apparatus coupled with a braking mechanism. The collector apparatus is able to include a shroud that surrounds the braking mechanism and a catch element coupled with the shroud for collecting brake dust exiting the shroud. As a result, when coupled with the braking mechanism, the collector apparatus is able to ensure that most or all brake dust, such as copper or other particles from the braking mechanism that break off from the breaking mechanism during operation of the braking mechanism, are removed from the braking mechanism and collected by the filter/catch of the collector mechanism.

Apparatuses for converting a non-ionized gas stream into an ionized gas stream are disclosed. Disclosed apparatus include an ionizing wire electrode at least partially disposed within and stationary relative to a channel. A frame has plural support elements for supporting the ionizing wire. The frame is configured to make full rotations around the channel in a first rotation direction while applying tension to the ionizing wire. The support elements are configured to physically remove material from the ionizing wire while the support elements are moved along the wire by the frame rotation.

An electric dust collecting device according to the invention includes an electric charging unit for electrically charging dust in air, a first filter unit including a plurality of discharge electrode plates spaced apart from each other to define passages therebetween through which dust electrically charged by the electric charging unit passes, and a second filter unit disposed downstream of the plurality of discharge electrode plates in an air flow direction and connected to a ground to cause corona discharge between the plurality of discharge electrode plates and the second filter unit and to collect electrically charged dust. Dust particles electrically charged by the electric charging unit pass through the passages of the first filter unit and then are collected at the second filter unit, and dust particles electrically charged between the first filter unit and the second filter unit are electrically charged by the second filter unit, thus improving electric charging efficiency and dust collecting efficiency.

A boiler system for combusting a fuel in the presence of a gas containing oxygen gas, and a gas cleaning system. The boiler system includes a compression device, a carbon dioxide supply duct operative for forwarding at least a portion of the pressurized carbon dioxide rich flue gas to at least one gas cleaning device.

A braking system for safely collecting brake dust produced by operation of a braking mechanism. The braking system comprises a collector apparatus coupled with a braking mechanism. The collector apparatus is able to include a shroud that surrounds the braking mechanism and a catch element coupled with the shroud for collecting brake dust exiting the shroud. As a result, when coupled with the braking mechanism, the collector apparatus is able to ensure that most or all brake dust, such as copper or other particles from the braking mechanism that break off from the breaking mechanism during operation of the braking mechanism, are removed from the braking mechanism and collected by the filter/catch of the collector mechanism.

A cleaning device for cleaning an air-ionizing part of an electrode. The device comprises a cleaning member arranged to be in physical contact with the air-ionizing part of the electrode, the air-ionizing part of electrode and the cleaning member being arranged to slide relative to each other. The cleaning device further comprises an actuator arranged to activate the relative motion between the air-ionizing part of the electrode and the cleaning member. There is also provided an ionization electrode comprising the air-ionizing part and the cleaning device, as well as a ultrafine particle sensor, an air ionizer or an electrostatic air cleaner comprising such an electrode.

Methods and apparatus for cleaning contaminant byproducts off of ionizing wire electrodes in ionizing blowers are disclosed. Disclosed apparatus include a housing with a gas-flow channel, an stationary ionizing wire, and a rotatable frame with supports for resiliently supporting the stationary ionizing wire within the channel. The ionizing wire produces charge carriers and has a surface that develops a layer of contaminant byproducts when an ionizing signal is applied thereto. The frame is rotatably mounted such that the supports clean the layer of contaminant byproducts off of the surface of the ionizing wire when the frame is rotated. Disclosed methods include providing an ionizing signal to the ionizing wire to thereby produce charge carriers and rotating the frame relative to the housing to thereby clean contaminant byproducts off of the ionizing wire.

Methods and apparatus for cleaning contaminant byproducts off of ionizing wire electrodes in ionizing blowers are disclosed. Disclosed apparatus include a housing with a gas-flow channel, an stationary ionizing wire, and a rotatable frame with supports for resiliently supporting the stationary ionizing wire within the channel. The ionizing wire produces charge carriers and has a surface that develops a layer of contaminant byproducts when an ionizing signal is applied thereto. The frame is rotatably mounted such that the supports clean the layer of contaminant byproducts off of the surface of the ionizing wire when the frame is rotated. Disclosed methods include providing an ionizing signal to the ionizing wire to thereby produce charge carriers and rotating the frame relative to the housing to thereby clean contaminant byproducts off of the ionizing wire.

The present invention relates to a respirator without breathing resistance, which has an air inlet duct that passes through an inside and an outside of the respirator and that has asymmetrical electrodes and particle capturing plates formed on an inner surface of the air inlet duct; ozone removing element that removes ozone generated by micro-plasma; and high voltage dc-dc converter that provides high voltage to the asymmetrical electrodes. It employs asymmetrical electrodes and particle capturing plates to filter air without generating breathing resistance. When the respirator according to the present invention is used, safety of a wearer may be maintained in accordance with an environment and breathing may be smoothly performed even while introduction of pathogenic bacteria, viruses, fungi, spores, fine dust, or the like included in air may be effectively blocked. Accordingly, the respirator may be widely utilized to maintain the safety of the wearer in various environments.

An electric dust collector is disclosed. The electric dust collector includes a film for collecting electrified dust particles and a case for receiving the film. A conductor-receiving part defining an insertion space, into which a portion of the film is inserted, is provided in the case. The electric dust collector further includes an electrode connection part filling the insertion space in the state of being in contact with the film. The electrode connection part is electrically connected to a voltage source to apply voltage in order to the film.