Abstract:
Provided is a burner for regenerating a diesel engine particulate filter. The burner includes: a combustion chamber for receiving a exhaust gas through connecting pipes from a diesel engine; a carburetor including a gasifying chamber for gasifying a liquid fuel, an atomizer for atomizing and supplying the liquid fuel to the gasifying chamber, and a convey air inflow line for flowing an external air into the gasifying chamber for conveying the gasified fuel into a mixed gas supplying unit; a mixed gas supplying unit for mixing the gasified fuel with an external air for burning, and supplying the mixed gaseous fuel to the combustion chamber; a combustor disposed in the combustion chamber for injecting the mixed gaseous fuel; an igniter for igniting the mixed gaseous fuel injected from the combustor; and a flame sensor for sensing whether the flame is made on the surface of the combustor or not.
Abstract:
The present invention provides a levitation control apparatus a magnetic levitation train, which includes a main operation unit digitally converting data inputted from the magnetic levitation train, performing pulse width modulation on the converted data, and transferring the modulated data to a state check & display unit to display a state of the magnetic levitation train, a signal conversion unit removing noise of analog signals inputted from a gap sensor and an acceleration sensor connected to the magnetic levitation train, setting up an initial gap by a variable resistor, and clipping the noise-removed signals to the main operation unit, a transformer over-current protection circuit unit cutting off a signal inputted to the main control unit if an over-current inputted to the main control unit occurs, an RF controller unit detecting a current flowing in the main control unit to make the detected current into a packet from of 23-bytes, transferring the packet to the main control unit to be used for a levitation control, and allowing the main control unit not to use a PWM signal if the current is equal to or greater than a predefined over-current, and a state check & display unit connected to the RF controller unit, controlled by the main control unit to check abnormality of RF reception, and displaying a result of the checked test. Accordingly, the occurrence of malfunction due to the hardware simplification is reduced and other peripheral circuits can sufficiently provide their functions as the protection circuit of the magnetic levitation train as well.
Abstract:
The present invention is related to a cold plasma reactor for low pressure drop and low energy density using a dielectric barrier discharge and a method for fabricating the same, the reactor being used for (1) treating various noxious gases such as a nitrogen oxide(NOx), a volatile organic compounds(VOCs) , and a stinking material, (2) generating ozone and ozone water, and (3) generating a chemically reactive species having high chemical reactivity in order to treate a surface of a metal, a ceramic and a polymer material. The cold plasma reactor comprises a cylindrical electrode rod, the cylindricalelectrode rod comprising a dielectric cylinder with a hole formed in the center thereof and a metal rod inserted into the hole, or a metal paste applied on the inner surface of the hole, and a both side structure formed by installing numbers of the cylindrical electrode rods spaced apart with a regular distance in parallel. In the both side structure, metal leads of neighboring electrode rods are positioned opposite to each other to prevent arc discharge from being generated and to generate stable plasma. The cold plasma reactor for low pressure drop and low energy density according to the present invention is applied to a system which (1) minimizes pressure drop of a flow occurred in a conventional art, (2) consumes low plasma generating power for handling mass flow and prevents oxidation and corrosion of the metal electrode, and (3) is not influenced by a direction of a flow.
Abstract:
The present invention relates to a plasma reaction apparatus and a plasma reaction method using the same. More particularly, the present invention relates to a plasma reaction apparatus which is applied to the reforming of fuel by generating rotating arc plasma and using the rotating arc being generated, the chemical treatment of a persistent gas, and the apparatus for decreasing NOx by an occlusion catalyst, and a plasma reaction method using the same. For this purpose, a raw material for a reaction is allowed to flow through an inflow hole in a swirl structure so that the raw material forms a rotating flow to progress. Accordingly, the raw material is sufficiently reacted in a plasma reaction space of a restrictive volume, and a high temperature plasma reaction is more promptly performed. Furthermore, a plasma reaction zone is expanded, prior to discharge, by a broad area chamber formed as the width of an upper part of a furnace is expanded, and plasma being generated is expanded and stayed as a pointed end spaced from an electrode at a predetermined interval is formed at an expanded end. Accordingly, the present invention relates to a plasma reaction apparatus and a plasma reaction method using the same, a plasma reaction method of a persistent gas, and an apparatus decreasing NOx by an occlusion catalyst, all of which are capable of excluding the discontinuity of the plasma reaction zone.
Abstract:
The present invention relates to a method for attaching nanomaterials by using a Langmuir- Blodgett method, wherein a Langmuir-Blodgett (LB) film, which is comprised of nanomaterials, is formed from a dispersed solution where the nanomaterials are stably dispersed in a volatile organic solvent, and then the nanomaterials of the LB film are transferred to a substrate or a holder. The method according to the present invention may be desirably applied to fabrication of a nanopattern structure, or manufacture of a probe, as a mechanical and electric device, for detecting signals such as surface or chemical signals.
Abstract:
The present invention relates to a method for manufacturing a flexible transparent electrode, comprising the steps of: (1) forming a thin film of carbon nanotube on a solid substrate; (2) coating a precursor capable of forming a flexible transparent substrate on the thin film of carbon nanotube; (3) curing the precursor to make a flexible transparent substrate on which the thin film of carbon nanotube is fixed; and (4) removing the solid substrate, and to the flexible transparent electrode manufactured thereby. Using the method of the present invention, a flexible transparent electrode with large area can be obtained, which maintains stable adhesiveness of the carbon nanotube film to the substrate even after repeated bending and folding. The flexible transparent electrode according to the invention can be advantageously used in various applications such as displays, electronic devices, sensors, memory devices or the like.
Abstract:
A horizontal continuous casting apparatus for continuously manufacturing a magnesium alloy plate and a method of manufacturing a magnesium alloy plate using the same. The horizontal continuous casting apparatus is structured such that the cross-sectional area of the plate is equal to or smaller than that of a melt inlet, and includes a cooling unit for indirectly cooling the melt using a cooling jacket provided to the outer wall of the mold and/or for directly cooling the melt through spraying of cooling water, and a drawing unit having a multi-step drawing cycle. Thereby, magnesium alloy plates having various sizes can be safely and continuously cast.
Abstract:
The present invention provides a process for the preparation of a super water repellent surface comprising the steps of arranging a plurality of spherical beads on the surface of a substrate to form a (N)-th bead layer, etching the substrate surface with the (N)-th bead layer as etching mask, arranging a plurality of spherical beads, which are larger than the (N)-th beads in diameter, on the substrate surface to form a (N+1)-th bead layer, etching the substrate surface with the (N+1)-th bead layer as etching mask, removing the beads from the etched substrate surface and coating a fluorine compound on the substrate surface on which a hierarchical concavo-convex structure has been formed, wherein the (N+1)-th bead layer forming step and the (N+1)-th etching step are repeated for N times.
Abstract:
There is provided a plasma and bio filter hybrid gas cleaning system in a contaminated noxious gas processing system, comprising: a pneumatic nozzle for supplying a contaminated noxious gas exhausted from a contaminated gas exhausting source, together with water; a plasma reaction unit positioned under the pneumatic nozzle and connected to a high voltage application unit; a bio filter unit positioned under the plasma reaction unit; a water tank positioned under the bio filter unit, for storing the water flowing down from the bio filtering unit part; a water pump for circulating the water stored in the water tank to the pneumatic nozzle; and a blower for supplying the contaminated noxious gas to the pneumatic nozzle. In accordance with the plasma and bio filter hybrid gas cleaning system, the water and the noxious gas are simultaneous supplied to the plasma reaction unit, so that the performance of decomposing the noxious gas is increased; water particles and oxygen are uniformly supplied to the bio filter unit through the pneumatic nozzles and the plasma discharge, so that the noxious gas cleaning function of microorganisms is improved; and the processing capacity increases while reducing pressure loss, compared to a conventional bio filter.
Abstract:
Disclosed herein are a bioactive ceramic coating having excellent biocompatibility and a preparation method thereof. The bioactive ceramic coating is coated onto a metallic material or a ceramic material, including alumina or zirconia, consists of crystalline grains, having an average diameter of less than 0.1 μm, and non-crystalline grains, and has a density of greater than 95% and a thickness ranging from 0.1 to 100 μm. Since the bioactive ceramic coating is present at a mixed state of crystalline grains, having an average diameter of less than 100 nm, and non-crystalline grains, has a crack-free and dense structure, and has excellent biocompatibility, it is useful in bone reconstruction, for example, as a surgical implant or an artificial hip joint.