Provided is a safety cabinet that, when multiple different kinds of pathogens or the like are handled in the same safety cabinet, can prevent previously-handled pathogens or the like from being commingled with pathogens or the like to be subsequently handled after cleaning and disinfection. The safety cabinet includes a work opening in the front face of a work space and supplies clean air to the work space from above, wherein the safety cabinet is provided with the following: a rear air inlet formed in the back surface lower part or in the bottom rear side of the work space; a front air inlet formed in the bottom front side of the work space; and a work table air inlet formed in a work surface, between the rear air inlet and the front air inlet, and parallel to the front air inlet and/or the rear air inlet.

A foreign object inspection device determines the position and the shape of foreign objects remaining on a workpiece. The foreign object inspection device for inspecting foreign objects at inspection spots of a workpiece includes a nozzle including a suction port that sucks a foreign object, an exhauster, and a suction channel connecting the nozzle to the exhauster, and a detector installed on the suction channel to detect foreign object information about the shape of the foreign object sucked through the suction port.

An apparatus for manufacturing a display device includes: a stage unit; and a suction unit located above the stage unit, wherein the suction unit includes: a main body including an outer box with top and bottom openings and an inner cup disposed in the outer box; a first air blower disposed above the main body and including a first main pipe extending in a first direction and a second air blower including a second main pipe extending in a second direction intersecting the first direction; a lower plate coupled to a lower end of the outer box and including a through hole; and a suction inlet defined by an inner end of the lower plate defining the through hole and a lower end of the inner cup, wherein the suction inlet is opened downward.

A substrate processing apparatus and a substrate processing system according to the invention includes a processing chamber having a processing space capable of accommodating a substrate inside, being provided with an aperture on a side surface thereof, which communicates with the processing space to cause the substrate to pass therethrough, and being disposed under a downflow environment, a lid part which closes and opens the aperture, a fluid supplier which supplies a heated processing fluid to be used for processing the substrate to the processing space closed by the lid part, and a regulator which guides at least part of an air flowing as the downflow to around the processing chamber and generates an airflow having a uniform flow velocity along an outer surface of the processing chamber.

An open fume capture and exhaust work station for a laboratory classroom having an air exhaust system that provides unobstructed sight lines for students at the station of the other students and of a classroom instructor. The work station includes an upper table surface providing a plurality of individual work surfaces, a fume extractor extending upwardly from a middle portion of the table surface to an elevation below the student sight lines, a pair of elongated air outlet openings adjacent to opposed sides of the table for directing fan generated opposed airflows to the extractor which defines opposed upstanding air inlet faces and communicates those faces with the air exhaust system creating a pressure drop within the extractor that captures the opposed inwardly airflows and pull the airflows over the individual work surfaces and into said extractor, capturing and removing emissions from spills and experiments on those work surfaces.

A sensor-based motion control fugitive dust suppression system comprises: a laser pointer provided on a frame to conduct a setting operation such that directions of a plurality of mist spray injection nozzles provided on a blast pipe located inside the frame correspond to the front end of a chisel of a hydraulic breaker; a data logger for collecting, from a sensor provided at the crushing apparatus, location source information for a hitting impact point of the hitting part; a location information processing unit analyzing the location source information collected from the data logger so as to generate the location information on the hitting impact point of the hitting part; and a system control unit for outputting a control signal so as to control a driving unit rotating the blast pipe in a vertical or horizontal direction, according to the location source information.

A device for dispersing foul gaseous effluent emissions released diffusely by sources located close to the ground, in particular by wastewater treatment ponds (10, 11, 12), includes: at least two auxiliary air or gas injectors (5a1, 5b1; 5a2, 5b2; 5a3, 5b3) oriented upwards and installed in opposing zones on the periphery of each foul gaseous effluent source, such as to disperse the gaseous effluents; separate supply elements (8.1, 13a1, 13b1; 8.2, 13a2, 13b2; 8.3, 13a3, 13b3) for the injectors; and wind-direction-sensitive control elements for ensuring that at least the injector(s) best located to disperse and/or lift the gaseous effluent plume are supplied.

The invention relates to a device (10) for additively producing at least one component region of a component (12), in particular a component (12) of a turbomachine. The device (10) can comprise at least one coating apparatus (14) for applying at least one powder layer of a component material to at least one build-up and joining zone of at least one component platform (16), which can be lowered, wherein the coating apparatus (14) can be moved in relation to the component platform (16). In addition, the device (10) comprises at least one suction device (36) for suctioning of process waste gases and/or particles. The coating apparatus (14) thereby comprises at least one suction channel (22) or at least one suction pipe, which has at least one suction opening (24) oriented in the direction of the component platform (16).

The present invention provides a steady flow structure and a ventilation apparatus having the steady flow structure. The ventilation apparatus comprises: a hood arranged indoors, an inner chamber of the hood constituting a work chamber; and a front wall of the hood formed with a front opening which opens towards the indoor environment; an air supply duct, which supplies air into the work chamber through air supply outlets provided on the hood and extending in the left and right width direction of the work chamber; and an air exhaust duct, through which the air entering the work chamber through the front opening and the air entering the work chamber through the air supply outlets are exhausted from the work chamber to outside; a steady flow structure is provided in the interior of the air supply duct, supply airflow enters into the steady flow structure in the left-right directions, and then blows out evenly and stably along the air supply outlets located along the sides of the steady flow structure after flowing through the steady flow structure. The ventilation apparatus provided by the present invention solves the problems of directionless, turbulent and chaotic airflow blown out of air supply outlets which exist with ventilation apparatus in prior art, and reduces the working noise levels that exist in ventilation apparatus in prior art.

The extraction room and ventilation system comprises an extraction room involving opposing supply and exhaust systems that provide a laminar type air flow configured to transmit fresh air flow to said extraction room at a rate of more than 1000 cubic feet per minute at a static pressure of more than 0.5 inch water. The extraction room is configured to use intrinsically safe or Class 1 Division 1, group D electrical appliances; a flammable gas detector, with an alarm and automatic ventilation system connected to said flammable gas detector; and be constructed in accordance with the International Fire Code & International Building Code definition for a One Hour Fire Rated Room construction. In another embodiment the ventilation system may be prefabricated or installed in a standardized movable unit such as a trailer or shipping container.