An object of the present invention is to provide a safety cabinet that allows a clearer observation of contamination of an operation stage surface. In order to realize the object, the safety cabinet is configured to include an operation space including an operation stage; a front panel formed in a front surface of the operation space; an operation opening provided in a lower portion of the front panel; a suction port that is provided in the vicinity of the operation opening on a front side of the operation stage to lead downward; and an air circulation path through which air suctioned from the suction port flows along a lower portion, a back surface, and an upper portion of the operation space, in which the operation stage is made of a transparent material, and a light source is provided to irradiate the operation stage with a light from a side of the operation stage, which is opposite to the operation space.

The subject matter is the assembly of a containment means with an aseptic working chamber and associated decontamination arrangement. The working chamber is delimited at the bottom by a base, and above the working chamber is a circulating air zone, in which a circulating air filter with a circulating air fan is arranged. The circulating air zone and the working chamber are delimited towards the outside by a housing. At least a first returning air channel leads from the working chamber into the circulating air zone. A returning air filter is fluidically connected to the returning air channel, specifically is arranged facing the circulating air zone. The returning air filter can be arranged at the opening of the returning air channel into the circulating air zone or arranged in the circulating air channel, set back from the opening. The returning air filter and the circulating air filter are in the form of a plate filter or an exchangeable filter cartridge or a replaceable filter insert. A single returning air filter or a series of interacting returning air filters and a single circulating air filter or a series of interacting circulating air filters can be installed. Containment means in which larger volumes of air are to be processed also have a second returning air channel at or in which a returning air filter is also installed.

A fume cupboard, of the type comprising a framework with two front uprights (2a,2b), two rear uprights (3a,3b), a rear panel (11), two side panels (6,7), an upper panel (8) and a sash (4) consisting of a frame (12) and at least one panel (13) for closing an inner chamber (1 0) of said fume cupboard (1). The fume cupboard of the invention comprises a transmission system (14) for transmission of the vertical movements of said sash (4) located inside the abovementioned front uprights (2a,2b), or inside said front uprights (2a,2b) and said rear uprights (3a,3b).

A method is provided for detecting primary gas flows (18) in flow chambers (10). The primary gas (18) flowing in a flow chamber (10) is locally seeded with a seed substance and the movement of the seed substance, representative of the flow of the primary gas (18), is detected by imaging by an image detector (28) and an imaging optics (30) arranged in front of said image detector (28). A gas mixture (34) that moves along with the primary gas (18) without relative motion and that has a refractive index distinguishable from that of the primary gas (18) is used as the seed substance, and imaging detection is carried out by a background schlieren measurement method.

The invention relates to a work vehicle (1) comprising an operable arm (10) adapted to handle a tool (A-D) fastened to the free end of the arm, a control unit (4) for controlling the work vehicle (1), a dust control system arranged to distribute water mist with the aim of retaining dust that is created when the tool is used. For efficient dust control, the dust control system comprises a pressure air source (31) and a water pressure source (21), an air duct (33) arranged for the tool (A-D), through which an airflow from the pressure air source (31) can be conveyed, an injection nozzle (26) directed against the airflow in the air duct (33), with which water from the water pressure source (21) can be sprayed into the airflow for atomization of the water into liquid drops, which together with the airflow form a water mist, whereby the air duct arranged for the tool (A-D) is directed, so that the liquid drops form water mist (36) in the surroundings of the tool.

Machine (1) for distributing a product stored in a container (30) comprising a storage zone (2) delimiting locations (4) for housing a container (30), a metering station (5) delimiting a chamber (6) housing a support (7) for accepting a collecting vessel (33), this support (7) being positioned vertically in line with an opening (8) providing access to the chamber (6), which opening is arranged in an upper part (61) of the chamber (6), the machine (1) further comprising a system (10) for emptying each location (4) for housing a container (30) through the opening (8) providing access to the chamber (6), and a unit (14) for controlling the machine (1). The metering station (5) comprises a sensor (13) for detecting the presence of a collecting vessel (33) inside said chamber (6). The control unit (14) is configured to operate the machine (1) on the basis of data supplied by said sensor (13), and the metering station (5) is equipped with a circuit (15) for the circulation of gaseous fluid providing communication between the chamber (6) and the outside of said chamber (6) through a forced circulation of air.

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.

An apparatus is provided for preventing the spread of air-borne contaminants in a defined space. The apparatus comprises an air flow outlet adjacent to or within the defined space, an air flow inlet adjacent to or within the defined space, and a conduit for transporting air from the air flow inlet to the air flow outlet. An air treatment module is provided within or adjacent the conduit for extracting air-borne contaminants from air transported from the air flow inlet to the air flow outlet. The air flow outlet deposits air into the defined space substantially evenly across an outlet area.

Machine (1) for distributing a product stored in a container (30) comprising a storage zone (2) delimiting locations (4) for housing a container (30), a metering station (5) delimiting a chamber (6) housing a support (7) for accepting a collecting vessel (33), this support (7) being positioned vertically in line with an opening (8) providing access to the chamber (6), which opening is arranged in an upper part (61) of the chamber (6), the machine (1) further comprising a system (10) for emptying each location (4) for housing a container (30) through the opening (8) providing access to the chamber (6), and a unit (14) for controlling the machine (1). The metering station (5) comprises a sensor (13) for detecting the presence of a collecting vessel (33) inside said chamber (6). The control unit (14) is configured to operate the machine (1) on the basis of data supplied by said sensor (13), and the metering station (5) is equipped with a circuit (15) for the circulation of gaseous fluid providing communication between the chamber (6) and the outside of said chamber (6) through a forced circulation of air.

A method for controlling the direction of gas suctioning is carried out in a device (1) for producing a three-dimensional object (2) by selectively solidifying building material (13) layer by layer. The device (1) comprises an application device (12-14) for applying a layer of the building material (13) to a build area in a working plane (10), a solidifying device (20) for selectively solidifying the building material (13) in the applied layer, and at least two gas nozzles (40) which are arranged at the edge of the build area. The gas nozzles (40) are switchable into a function for suctioning gas from the device (1) and to a functionless state, and are switched depending on an operating state of the device (1).