16975results about "Dirt cleaning" patented technology

A hood for a cook top is controlled preferably by an electronic controller through a touch keypad. The hood has front and side walls and attaches to a back wall. It has an internal cavity and structure to restrict airflow out of the hood. The structure also creates an air curtain. The curtain traps and moves heated air and effluents upwardly off of the cook top. At least one blower is located near the cook top for moving the air and effluents. The hood may also have at least one: filter, sensor, duct, lighting fixture, vent, display, and circuit board.

A low depth telescoping downdraft ventilator controlled by an electronic controller providing a precisely controlled and efficient way of removing gases and fumes is disclosed. The low depth telescoping downdraft ventilator has the ability to fit behind a built-in oven placed below a cook top unit. The telescoping downdraft ventilator has an almost infinitely selectable range of heights above a cook top with a built in oven. The ventilator collects and draws in exhaust fumes and smoke, filters it and re-circulates or expels it either outdoors or indoors. The inner member of the telescoping ventilator may house the exhaust fans and may move up or down without the use of mechanical switches for elevation detection and stopping. The ventilator may have sensors to detect temperatures, filter change need, fan speeds, telescoping stop points, energy consumption, resistance and voltage, enabling programmable set point operation.

The present invention relates to arc welding torch and a method of extracting fume gas from a welding site. The torch comprises a metal electrode and at least one shield gas port adapted to direct a shield gas curtain around the metal electrode and a welding site. At least one shroud gas port is spaced radially outward from the shield gas port and adapted to impart to an exiting shroud gas a radially outward component of velocity. Fume gas is preferably extracted from a position radially intermediate the shield gas curtain and the shroud gas curtain.

The invention provides a system for restoring organic contaminated soil through in-situ electrical heating. The system comprises an infrastructure technology, an electronic control system, a gas treatment system, a monitoring and data acquisition system and a repairing effect comprehensive assessment system. The infrastructure technology comprises heating well and extraction well construction, ground compaction and insulating layer construction technologies; heating wells are distributed on a contaminated site according to a triangle arrangement principle and a proximity principle, and the extraction well is arranged in the geometric center of the layout of the heating well; the gas treatment system is composed of a pre-cooling adsorption sledge, an extraction sledge and a treatment sledge, and is used for completing gas extraction and treatment and achieving the tail gas discharging requirement; and the repairing effect comprehensive assessment system evaluates the temperature risingeffect of the contaminated soil in the restoring process and the treatment effect of the contaminated soil. According to the system, the technological route is complete, the soil property applicability is wide, the heating temperature can reach 500 DEG C or above, and volatile and difficult-to-volatilize organic contaminant can be treated at the same time.

A wireless particle collection system includes a dust collector and at least one power tool coupled to the dust collector. The power tool is associated with a unique identifier contained in a wireless signal transmitted from the power tool upon an activation event of the tool. The unique identifier is recognized by the dust collector, and the dust collector activates or de-activates upon receipt of the wireless signal.

An auxiliary dust collection system can be interposed between a sander or other dust producing tool and a vacuum source, e.g., shop vacuum. This auxiliary system has a cyclonic separator connected by a flexible hose to the tool and by another hose to the vacuum source. The cone of the separator is mounted onto the lid of a drum into which the dust precipitates. For a tool that has its own blower, the vacuum source can be omitted, and the air leaving the outlet duct of the separator can be filtered and returned to the ambient. A drop in silencer formed of a sleeve or tube of acoustic foam can be positioned into the inlet side of a filter cartridge following a cyclonic separator. The silencer absorbs a significant fraction of the process noise.

An additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

A hood for a cook top is controlled preferably by an electronic controller through a touch keypad. The hood has front and side walls and attaches to a back wall. It has an internal cavity and structure to restrict airflow out of the hood. The structure also creates an air curtain. The curtain traps and moves heated air and effluents upwardly off of the cook top. At least one blower is located near the cook top for moving the air and effluents. The hood may also have at least one: filter, sensor, duct, lighting fixture, vent, display, and circuit board.

An automatic powder recycling apparatus includes a housing, a plurality of isolation elements, an air-blowing device, a powder filtering member, a recycling member and an air-inhaling device. A sealed space is defined within the housing. The air-blowing device is disposed within the sealed space for removing the powder attached on the surface of the finished product. The air-inhaling device is in communication with the first receptacle for allowing the first receptacle to be in a negative pressure state. When the powder on the finished product is removed by the air-blowing device and directed to the powder filtering member by the air-inhaling device, the powder is filtered and blocked by the powder filtering member. When the air-inhaling device is disabled, the powder blocked by the powder filtering member naturally falls down to the recycling member.

An airflow control valve for a clean room having a duct section with a damper positioned within the duct. The damper being capable of an adjustment from an open position to a closed position. The opening and closing of the duct is accomplished through a magnetic coupling such that the duct can remain sealed during operation. The airflow control valve includes a sensor for measuring the airflow rate, so that the duct can be adjusted to maintain one or more predetermined flow rate set-points.

A low depth telescoping downdraft ventilator controlled by an electronic controller providing a precisely controlled and efficient way of removing gases and fumes is disclosed. The low depth telescoping downdraft ventilator has the ability to fit behind a built-in oven placed below a cook top unit. The telescoping downdraft ventilator has an almost infinitely selectable range of heights above a cook top with a built in oven. The ventilator collects and draws in exhaust fumes and smoke, filters it and re-circulates or expels it either outdoors or indoors. The inner member of the telescoping ventilator may house the exhaust fans and may move up or down without the use of mechanical switches for elevation detection and stopping. The ventilator may have sensors to detect temperatures, filter change need, fan speeds, telescoping stop points, energy consumption, resistance and voltage, enabling programmable set point operation.

Systems, devices and methods provide energy recover, modular systems to build and revise commercial kitchen services, closed circuit exhaust, and high efficiency capture and containment of fumes from cooking processes.

An ultrasonic detection narrow pulse wide laser cleaner includes a narrow pulse wide laser device (1), a beam adjustment transmission device (2), a moving platform device (3), an ultrasonic detection device (4), an automatic control device (5), a dust absorption recovery device (6) and an ultrasonic detection narrow pulse wide laser filth clearing method. A cleaned object surface is irradiated with narrow pulse wide lasers. And a strong vibration shock wave is produced in short time to remove filths from the medium surface. At the same time, an instrument device is used to monitor and analyze ultrasonic waves caused by the vibration during the cleaning process to ensure the good medium surface and realize the automatic cleaning process. The cleaner is used to remove various filths of oxides, corrosion matters, paint, grease marks, residues, etc. of the media surfaces of metals, semiconductors, buildings, etc. The cleaner has the advantages of good effect, non-damages, high efficiency, automation, etc.

An exhaust control system (72) for a commercial or institutional kitchen exhaust system (32) is disclosed in which the exhaust fan speed is optimized for the amount of cooking heat and cooking by-product generated by the cooking units, as well as for comfort in the kitchen (12). Kitchen comfort is determined by sensing temperature, humidity, noxious gases, smoke, odor, or some combination thereof. In particular, exhaust air temperature can be used by the control system (72) to modulate fan speed from a minimum value to a maximum value based on the minimum and maximum temperatures that define a particular temperature span. During operation, the control system (72) continues to monitor environmental parameters of the kitchen (12) to determine if the current temperature span provides optimal performance. Upon determining that the current temperature span is no longer the optimal one, the control system (72) operates the exhaust system (32) according to a different temperature span.

A system for controlling dust during hydraulic fracturing operations includes a manifold having a plurality of ports for capturing dust when negative air pressure is applied to the manifold. A support frame positions the manifold above a piece of hydraulic fracturing equipment receiving sand from a sand source.

An exhaust assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a drive chamber and surrounding annular space. A fan driven by a motor whose shaft extends downward from the drive chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly. The motor is pivotally mounted inside the assembly to provide access to the motor components when it is desired to perform inspection and maintenance.

A portable enclosure, easily erectable and collapsible, to provide environment control and prevent contaminants from being released from the enclosure. The enclosure provides a flexible envelope attached to the interior of the space defined by vertical and horizontal supports which can be erected and collapsed. When erected the enclosure functions as an anteroom and has removable panels in the sides and top. In use, the enclosure is sealed against a vertical or horizontal surface to be worked on and a panel from the side of the enclosure is opened and closed to provide access to the surface by the user. When collapsed the enclosure is a package approximately the size of an average golf club bag which is easily portable to another location. Ducting is provided to which negative pressure pumps are connected to maintain negative pressure within the enclosure and draw contaminants into the pump and then into a closed container. In one embodiment, a four-sided flange extends from the rear side of the enclosure to allow sealing of the flange around the doorway and thereby provide a mechanism for isolating the room located interiorly of the doorway.

A fume hood optical sash sensing system for controlling the flow of air into a fume hood to maintain a constant face velocity by utilizing an optical sensing device mounted inside the fume hood that can sense the movement of a sash based on repeatable reflexive tape to produce an output control signal that corresponds to sash movement to produce desired airflow into the fume hood. The system includes an optical sensing device with a light source, reflexive tape with a repetitive, quadrature encoded pattern, a smart controller device that receives output control signals from the optical sensing device, and an actuation device capable of receiving the output signal from the controlling device to control the damper device that will result in constant face velocity across the face of the sash.

A method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

A range hood with a smoke deflector, comprises a body, a smoke collecting cover and the smoke deflector, wherein an air inlet is arranged on the smoke collecting cover, the smoke deflector faces to the air inlet and be in the predetermined distance from the smoke collecting cover, thus a oil smoke channel through which the oil smoke can pass is formed between the smoke deflector and the smoke collecting cover, the range hood is characterized in that the distance between the smoke deflector corresponding to the oil smoke channel and the smoke collecting cover is gradually reduced from the periphery of the smoke deflector to the air inlet. Compared with the prior art, the invention has the advantages: the smoke deflector is used for forming the wall-attachment effect, the oil smoke flow uniformly without series flow, the distance between the smoke deflector and the smoke collecting cover is gradually reduced from the periphery of the smoke deflector to the air inlet, so that the Venturi effect is formed conveniently, thus accelerating the sucking of smoke by the blower fan.

A system for controlling silica dust generated during the transfer of frac sand from a storage container through a conveyor system includes a system of conduits having a plurality of inlets for collecting silica dust generated at selected points along the conveyor system. An air system pneumatically coupled to the system of conduits generates a negative pressure at each of the inlets to induce the collection of silica dust at the selected points along the conveyor.

A dust extraction shroud for a drill, which surrounds a drill bit and which lies adjacent the work surface, comprises a body portion defining a first inlet adapted to engage the work surface and to surround the location at which said bit penetrates the surface. The shroud body further defines a first outlet connected to a source of suction and a third inlet for allowing the bit to pass through said body portion. A first sealing means is arranged in said third inlet for surrounding said bit and resisting the flow of air. Wherein said body portion includes at least one protruding portion defining a second inlet between said protruding portion and an adjacent part of said body, and on a side of said protruding portion remote from the first inlet. The second inlet admits air to enter said body portion and travel to the first outlet.

A ventilation member having: a breathable film transmitting gas passing through an opening portion of a housing in a state in which the breathable film is fixed to the opening portion; and a support including a supporting portion for supporting the breathable film and an insertion portion to be inserted into the opening portion of the housing; wherein a lock structure for locking the support in the housing by rotating the support around a central axis of the support is formed in the insertion portion.

A method of reducing silicosis caused by inhalation of silica-containing proppant, such as silica sand and resin-coated silica sand, and apparatus therefor.

The invention discloses a bearing washer, which comprises a main body workbench, a washing chamber arranged on the main body workbench, a spraying pump and a drive motor, wherein the main body workbench is provided with an inlet-outlet path of the washing chamber; the inlet-outlet path is provided with a feed-discharge trolley; the inlet-outlet path is connected with an inlet-outlet cylinder; an upper spraying pipe is arranged at the top position in the washing chamber, and a lower spraying pipe is arranged at the bottom position in the washing chamber; the feed-discharge trolley is provided with an inner stationary fixture, an outer stationary fixture and an upper drive carriage, and the inner and outer stationary fixtures can adjust and clamp a large-size bearing; a rotary spindle, which can be jointed with the centre of the inner stationary fixture, is arranged at the top position in the washing chamber; and the rotary spindle is connected with the drive motor. The bearing washer has the advantages of reducing intermediate links, automatically completing the whole process of product washing, effectively washing dead corners in the products, greatly improving the cleanness of the product, along with high automation, high washing efficiency, low operation and labor intensity, quick, convenient and flexible clamping and fixing operation and complete washing.

A robotic drilling apparatus is described which has been adapted for drilling holes in ceilings and walls on a construction site. The apparatus (100) comprises a robotic arm (110) mounted to a substructure (112), the substructure comprising a lifting mechanism arranged to lift the robotic arm to a working position, wherein the robotic arm has a base end (110a) and a movable end (110b), the base end being mounted to an upper surface (114) of the lifting mechanism and the movable end being capable of movement with respect to the base end in a three dimensional space, wherein the robotic drilling apparatus further comprises a mount (120) provided on the movable end for holding a drilling device (122) and a control unit (134) for controlling the operation of the robotic arm. The lifting mechanism preferably comprises a scissor-jack lifting platform. The robotic arm (110) and any support structure (134) for the robotic arm weighs less than 43 kg, and preferably individually weigh less than 23 kg.