4529 results about "Dust particles" patented technology

A solar energy-operated street-lamp device is disclosed. The solar energy-operated street-lamp device is characterized in that the solar energy-operated device includes a solar energy-operated absorption board, a circuit board and a storage battery that is mounted within a post seat of the lamp-post. The power stored in the storage battery will be delivered to an LED via circuit board to provide illumination. The solar energy absorption board and the transparent protective hood are of arc-shape so that the sunlight can be converged onto the solar energy absorption board and at the same time, dust particles and birds' excrement or fallen leaves will not be collected on the surface of the hood surface.

A battery-powered, upright vacuum sweeper comprises a base assembly and a handle pivotably attached thereto. The base assembly comprises a vacuum fan assembly fluidly communicating with an inlet for vacuuming dust and the debris particles from a surface into a removable reservoir. A rotating roller brush attached to the base assembly sweeps the particles into the inlet. A dust pad assembly comprises a disposable dust cloth extending over a portion of the base assembly in contact with the surface to be cleaned for removing dust particles which are not removed by vacuuming.

A dust-collectable mobile robotic vacuum cleaner includes a base frame, a driving device mounted to the base frame, a control device mounted to the base frame and electrically connected with the driving device, a collision-detectable unit mounted to the base frame electrically connected with the control device, and a dust-collecting device mounted to the base frame. The dust-collecting device has dust-collecting box, a dust guider, a round brush, and a dust entrance formed at one side of the dust-collecting box. The dust guider is located at a lower edge of the dust entrance, having two opposite sides pivotably mounted to the dust-collecting box and lying against the ground at a predetermined angle respectively, for upward and downward pivoting movement. The round brush is rotatably located at a front end of the dust guider for sweeping dust particles.

A brush configured to move repeatedly over a vacuum filter. The brush will remove dust particles to prevent them from clogging the filter. In the preferred embodiment, the brush is mounted on a revolving shaft. As the shaft turns it moves the bristles of the brush over the surface of the filter, whereby dust particles may be dislodged. In one embodiment, the shaft is attached to the vacuum motor and is turned directly by the motor. In this embodiment a speed reducer may be employed to slow the rate of rotation of the brush. In another embodiment, a turbine is attached to the shaft. The turbine is placed in the path of the air stream moving through the vacuum. The air passing through the turbine cause it and the shaft to rotate, thereby reducing the load on the motor.

A brush configured to move repeatedly over a vacuum filter. The brush will remove dust particles to prevent them from clogging the filter. In the preferred embodiment, the brush is mounted on a revolving shaft. As the shaft turns it moves the bristles of the brush over the surface of the filter, whereby dust particles may be dislodged. In one embodiment, the shaft is attached to the vacuum motor and is turned directly by the motor. In this embodiment a speed reducer may be employed to slow the rate of rotation of the brush. In another embodiment, a turbine is attached to the shaft. The turbine is placed in the path of the air stream moving through the vacuum. The air passing through the turbine cause it and the shaft to rotate, thereby reducing the load on the motor.

A device (16) for separating particles (MP) from a flue gas flow (F) has a horizontal flue gas duct (18), through which the flue gas flow (F) is passed substantially horizontally from a first position (P1) to a second position (P2). In the first position (P1), the device (16) has a baffle arrangement (32), which comprises at least one plate (34, 36, 38) which is arranged in the flue gas duct (18) and which is inclined so as to deflect particles (MP) down to the lower portion (42) of the horizontal flue gas duct (18). In the second position (P2), the device (16) has a collecting means (40), which is arranged in the lower portion (42) of the flue gas duct (18) to collect the particles (MP) which have been deflected downwards by the plate (34, 36, 38) to the lower portion (42) of the flue gas duct (18).

The present invention discloses a decelerated centrifugal dust removing apparatus for a dust cleaner. It comprises a cylinder, a conical cylinder and a dust collector box connected in the given order from the upper part to the lower part, as well as an air outlet pipe and an air inlet pipe on the cylinder body. The conical cylinder has a small upper end and a large lower end. In the conical cylinder, on the lower part of the air outlet pipe (under the air outlet pipe) there is an umbrella-shaped reflector in the center of which is provided a hole for air returning. Between the periphery of the umbrella reflector and the side wall is provided an annular gap for the falling down of dust. The apparatus features small loss of air flow pressure, good effectiveness of air suction, high quality of dust filtering, and low noise. With the apparatus, the secondary pollution of the cleaned air can be effectively prevented, and it is especially suitable for use in a secondary stage filtering system of the dust cleaner and for separating small and fine dust particles.

A surface cleaning suction type appliance comprises a housing, an airstream suction source, a cyclone main body, and a dirt cup. The housing includes a main suction opening. The airstream suction source is mounted to the housing and includes a suction airstream inlet and a suction airstream outlet. The suction source selectively establishes and maintains a flow of air from the main suction opening, via the airstream inlet, to the airstream outlet. The cyclone main body is supported by the housing and is in communication with the main suction opening. The cyclone main body has a uniform outer circumference and includes a first stage separator, and a plurality of downstream second stage separators. The lengths of the second stage cyclonic separators are different for any number of adjacent pairs of separators from on pair up to all adjacent pairs of separators. The dirt cup is connected to the cyclone main body. The dirt cup includes a first particle collector and a second particle collector. The first particle collector communicates with the first stage separator for collecting dust particles from the first stage separator. The separate second particle collector communicates with the plurality of second stage separators for collecting dust particles from the second stage separators.

Provided is a suitable cleaning method of a porous semiconductor substrate without collapse of the porous structure due to cavitation or resonance. In a cleaning method of a porous surface of a semiconductor substrate having the porous structure at least in the surface, cleaning for removing dust particles adhering to the porous surface of the substrate takes place with pure water on which a high-frequency wave with a frequency in the range of from 600 kHz to 2 MHz is superimposed.

It is possible to reliably prevent dust particles from becoming attached to optical components and it is also possible to suppress temperature rises in optical components. A projection type display device according to the present invention includes a plurality of optical components (20, 21, 24, 30, and so on), a hollow structure (45, 50, or the like), and an air blow source (19, 46, or the like). The plurality of optical components are provided along the optical axis direction of light emitted from a light source. The hollow structure includes optical components (20, 24) that are to be protected from the attachment of dust particles to optical components among the plurality of optical components, and forms an enclosed space separated from the surroundings. Then, the source that blows air is provided in the inside of the enclosed space to circulate the internal air for cooling targets.

A cyclone dust separating apparatus and a vacuum cleaner with the same is disclosed. The cyclone dust separating apparatus includes a first cyclone for separating large dust particles from air, a plurality of second cyclones for separating minute dust particles from air via a centrifugal force after dust separation at the first cyclone, and a cover disposed on an upper portion of the first cyclone and the second cyclones. The cover includes a conical guide formed at a lower center to guide air discharged from the first cyclone into the second cyclones. Because drawn-in air is repeatedly cleaned by a plurality of cyclones, the cyclone dust separating apparatus can be provided with a compact structure, can provide an effective cleaning operation, and can prevent deterioration of a suction force.

A transparent electromagnetic shield to protect solar panels and the like from dust deposition. The shield is a panel of clear non-conducting (dielectric) material with embedded parallel electrodes. The panel is coated with a semiconducting film. Desirably the electrodes are transparent. The electrodes are connected to a single-phase AC signal or to a multi-phase AC signal that produces a travelling electromagnetic wave. The electromagnetic field produced by the electrodes lifts dust particles away from the shield and repels charged particles. Deposited dust particles are removed when the electrodes are activated, regardless of the resistivity of the dust. Electrostatic charges on the panel are discharged by the semiconducting film. When used in conjunction with photovoltaic cells, the power for the device may be obtained from the cells themselves. For other surfaces, such as windshields, optical windows and the like, the power must be derived from an external source. One embodiment of the invention employs monitoring and detection devices to determine when the level of obscuration of the screen by dust has reached a threshold level requiring activation of the dust removal feature.

A dust collecting apparatus for a vacuum cleaner is provided. The dust collecting apparatus includes a dust collecting unit detachably mounted in a main body of the vacuum cleaner, to separate and collect dust from drawn-in air flowing therein; a filter unit disposed above the dust collecting unit, the filter unit comprising a filter to filter fine dust particles contained in air from which the dust has been separated by the dust collecting unit; a top cover to cover the filter unit and to discharge the air filtered through the filter; a rotating unit, which is disposed inside the filter unit, to strike a portion of the filter and to remove the fine dust particles attached to the filter; and a dust compression plate to compress the collected dust while being moved up and down inside the dust collecting unit by power transferred from the rotating unit.

A home cleaning appliance comprises a housing, an airstream suction source, a cyclone main body, and a dirt cup. The housing includes a main suction opening. The airstream suction source is mounted to the housing and includes a suction airstream inlet and a suction airstream outlet. The suction source selectively establishes and maintains a flow of air from the main suction opening, via the airstream inlet, to the airstream outlet. The cyclone main body is supported by the housing and is in communication with the main suction opening. The cyclone main body has a uniform outer circumference and includes a first stage separator, and a plurality of downstream second stage separators. The first stage separator has a longitudinal axis offset from a longitudinal axis of the cyclone main body in order to accommodate the second stage separators. The dirt cup is connected to the cyclone main body. The dirt cup includes a first particle collector and a second particle collector. The first particle collector communicates with the first stage separator for collecting dust particles from the first stage separator. The separate second particle collector communicates with the plurality of second stage separators for collecting dust particles from the second stage separators.

A ionic catching broad-spectrum highly effective dynamic rapid air sterilizing and cleaning machine, belonging to field of application research of air ionizing technique in the artificial environmental science, electrical climatology and iatrophysics; comprising power supply, air quality regulating display, fan or drive air flow, negative high pressure generator, electrical dust collector connected with earth inside and outside of the machine, and negative oxygen ion emission electrode; the negative end of the negative high pressure generator is connected with negative oxygen ion emission electrode to emit negative oxygen ion of high concentration to space, the positive end of it is connected with earth and electrical dust collector; the air quality regulating display can be equipped with water spray in outside, the water spray together with the fine particle in air acts as carrier adsorbing various pollutant in room air, and becomes negative larger dust particle gradually by using negative oxygen ion as kernel, and when its gravity together with the electric field force is larger than floating force, it will quickly fall to positive earth and dust collector, through which realizes purpose of broad-spectrum highly effective dynamic rapid air sterilizing and cleaning, and thus effectively controls the disease spread.

The invention discloses a wear-resisting piston ring with a hard-soft composite coating and the textured surface and a wear-resisting piston ring manufacture method. A hard coating like a chromium coating or a carburization / nitriding layer or a nickel base layer is deposited on an outer circle face of the piston ring, the hard coating is textured by pulse laser to achieve a regular and even micropore array, and a soft coating like a silver coating or a tin coating or a magnetic control sputtering MoS2 coating is prepared on the textured surface. The hard coating can serve as a hard support layer to improve wear resistance of the outer circle face of the piston ring. The surface micropore array can enhance fluid hydrodynamic effects of lubrication oil, can serve as a storage tank for lubrication oil / agent and can collect abrasive dust particles. The soft coating can serve as lubrication phase to achieve self lubrication and self repair of the friction surface.

The present invention relates to a separating apparatus for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner having such a separating apparatus for removing dust particles from a dust laden airstream. The separating apparatus includes a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.

An electrical connector assembly is disclosed. A rectangular plug and rectangular receptacle engage to provide a sealed and durable connector. The electrical connector assembly provides electric, fluid, data and other suitable information suitable for surgical, medical or other device applications. A latch is used to secure the plug with the receptacle and prevent the plug from being easily removed from the receptacle. The connector is substantially sealed to prevent fluid, dust particles and / or other matter from entering the components and damaging the connector assembly.

Polycrystalline silicon of the invention contains: (a) polycrystalline silicon fragments, wherein at least 90% of the fragments have a size from 10 to 40 mm, (b) <15 ppmw of silicon dust particles having particle sizes <400 μm; (c) <14 ppmw of silicon dust particles having particle sizes <50 μm; (d) <10 ppmw of silicon dust particles having particle sizes <10 μm; (e) <3 ppmw of silicon dust particles having particle sizes <1 μm; and (f) surface metal impurities in an amount ≦0.1 ppbw and ≧100 ppbw. A polycrystalline silicon production method of the invention includes fracturing polycrystalline silicon deposited on thin rods in a Siemens reactor into fragments; classifying the fragments by size; and treating the fragments with compressed air or dry ice to remove silicon dust from the fragments without wet chemical cleaning.

The invention relates to a device and method for abnormally cutting a toughened glass by ultra-short pulse laser. An output end of an ultra-short pulse laser apparatus is provided with an optical gate, an output end of the optical gate is provided with a beam expander, an output end of the beam expander is provided with a 45-degree holophote, an output end of the 45-degree holophote is provided with a three-dimensional (3D) dynamical focusing system, an output end of the 3D dynamical focusing system is provided with a telecentric field lens which is arranged facing to a platform above which a blowing device is arranged. When the ultra-short pulse laser device is used to cut, a heating device is used for heating the glass; the ultra-short pulse laser is focused in the glass by the 3D dynamical focusing system to abnormally scan the glass along with the laser, and the whole processing procedure is in helical processing; a suction dust-collecting device at the bottom of the platform is used for collecting the scanned glass slag; and the blowing device on the platform is used for blowing the slag and dust particles processed on the surface of the glass. The abnormal graph processing to the toughened glass is a processing form with smooth cutting surface and high cutting efficiency.

A method of producing a thin film using plasma enhanced chemical vapor deposition, including the steps of supplying a cation species to a substrate region when there is at most a relatively low flux of a plasma based anion species in the substrate region, and supplying the plasma based anion species to the substrate region when there is at most a relatively low flux of the cation species in the substrate region. This enables delivery of gaseous reactants to be separated in time in PECVD and / or RPECVD based film growth systems, which provides a significant reduction in the formation of dust particles for these plasma based film growth techniques.

A vacuum cleaner includes an electric blower; an electric blower controller for controlling the electric blower; an electric blower current detector for detecting at least a current flowing in the electric blower; and a dust chamber provided at an upstream of the electric blower, for collecting dust particles sucked by the electric blower. A predetermined level of a current is made to flow in the electric blower regardless of a dust particle amount in the dust chamber. Preferably, the vacuum cleaner further includes voltage detector for detecting a voltage of a power supply applied to the vacuum cleaner. More preferably, the vacuum cleaner further includes a frequency detector for detecting a frequency of a power supply applied to the vacuum cleaner.

An air purifier includes a vertically disposed housing provided with a wire gauze filter, electric fans and air filter elements. The electric fans draw outside air around the floor vertically into the bottom air intake port toward the top air output port of the housing so that the flow of air, when passed out of the air output port, flows upwards to a certain elevation and is then diffused and lowered in all directions around the housing. By means of the traction of the flow of air, the pressure difference of the convection of air between the low air pressure and the high air pressure at the bottom and top sides of the housing, high concentration of car waste gas, micro dust particles, hair dust, micro fibers and other harmful industrial odors that fall to the floor due to the effect of gravity or floating nearly above the floor are sucked into the inside of the housing by the low air pressure zone at the open bottom side of the housing and then removed by the filter elements.

A centrifugal particle separator (202) is provided for removing particles such as dust particles from the compressed airflow (110) prior to reaching and cooling the turbine blades (122, 124, 126) of a turbine engine (100). A particle separator structure (208) has a side facing the axis (118) about which it rotates, the side including a plurality of pocket dividers (214) defining a plurality of pockets (216), and further defining an entrance cavity (206) for receiving the compressed air (110) containing particles. An inner flowpath coupling (218) includes a side opposed to the axis (118) that is positioned adjacent the particle separator structure (208) to define an airflow path (220) having an entrance communicating with the entrance cavity (212) and an exit (222), wherein the diameter (226) of the airflow outer flowpath (224) decreases from the entrance to the exit, and wherein a centrifugal force created by the centrifugal particle separator assembly (202) rotating around the axis (118) and the decreasing diameter (226) of the airflow path (224) which accelerates the rotational velocity of the air, forces the particles (228) to collect within the plurality of pockets (216) and the remaining compressed air is provided to cool turbine blades (122, 124, 126). A plurality of optional air accelerator fins (210) may be positioned within the entrance cavity (212). The combination of quickly accelerating air from non-rotating to rotating velocity, for example, by accelerator fins (210), and further subjecting the air and entrained particles to increasing rotational velocity resulting in an increasing centrifugal force field as particles (228) progress from the entrance (212) to the exit (222) of the separator assembly (202), efficiently removes the particles (228) from the air.

The invention relates to the field of dust fall agents, in particular to an environment-friendly dust fall agent for a coal mine. The environment-friendly dust fall agent enables water mist on the surfaces of dust particles to quickly wet and permeate the insides of the dust particles, dust particle coagulation is quickened, dust particle sedimentation is quickened, and the dust fall agent is biodegradable. The environment-friendly dust fall agent for the coal mine comprises the following raw materials, by mass ratio, 60-100 parts of surface active agents, 5-30 parts of biodegradable high-molecular polymers, 20-60 parts of solvents, 6-20 parts of antifreezing agents and 0.5-4 parts of metal corrosion inhibitors. The dust fall agent is a concentrated solution, the ratio can reach 1: 1000 to 1: 5000, quick dust fall can be achieved, chloride salt is not contained, the agent is biodegradable after being sprayed, and therefore secondary environment pollution is avoided.