Abstract: A fume hood includes a plurality of walls. In one embodiment, the fume hood has a ceiling substantially perpendicular to a first wall of the plurality of walls and an L-shaped sliding door having a lower portion substantially parallel to the first wall and an upper portion substantially perpendicular to the lower portion. The fume hood also has at least one actuator configured to move the L-shaped sliding door between an open position and a closed position. In other embodiments, the door may have different shapes.

Abstract: The present invention relates to a welding booth that has a small foot print and can be joined to other booths for maximization of floor space use.

Abstract: By exhausting a gas in a second space (S2) surrounded by an outer wall of an inner barrel member (12) and an inner wall of an outer barrel member (13) outside an outer wall of the outer barrel member (13), a pressure in the second space (S2) is decreased so as to be lower than a pressure in a first space (S1) in the inner barrel member (12). This enables the gas in the first space (S1) to pass through a communication mechanism (30) and flow toward the second space (S2). At this time, an airflow passing through the communication mechanism (30) is “narrowed” so that the airflow is forced to flow. Thus, a mist containing particles or the like, which is generated when performing processing of the substrate (20), is efficiently exhausted from the first space (S1), therefore, contamination of the processing target surface of the substrate is prevented.

Abstract: A safety cabinet adaptable for a variation in body height of a worker using the safety cabinet, that is, a safety cabinet which prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents bacteria or virus from proceeding from the working space to the outside of the safety cabinet irrespective of a change in opening area of a front opening, is provided. A flow velocity of a clean air supplied into the working space and a flow velocity of the air flowing through the front opening are set at respective velocities predetermined to keep a physical isolation for preventing the contamination in accordance with a size of the front opening. Further, in the safety cabinet, the size of the front opening communicating with the working space under the front surface shutter is adjustable between 200 mm and 300 m.

Abstract: The present invention provides an apparatus and various embodiments thereof which allow the user of a laboratory fume hood to operate equipment and conduct experiments, while keeping the hood sash in a closed position.

Abstract: A fume hood is provided that can reduce emissions. The fume hood has a work chamber with a front side and an exhaust opening. The front side has an upper shield and a sash below the upper shield. The sash comprises at least one sash shield, wherein the at least one sash shield at least partially defines at least one sash opening in the front side to allow access to the work chamber.

Abstract: A fume hood includes a ventilated chamber having an access opening. A first elongated airfoil assembly is attached to an edge portion of a floor that extends from the opening. A sash is slidably mounted at the access opening and a second elongated airfoil assembly is attached to a lower edge of the sash. The first elongated airfoil assembly includes a plurality of elongated vanes in vertically spaced-apart relationship that define air flow channels. The second airfoil assembly includes a pair of elongated vanes in vertically spaced-apart relationship that define air flow channels that extend into the chamber. A baffle assembly is located in front of a rear wall of the chamber and includes a primary panel having a plurality of vertical air-exit slots adjacent a lower edge, and a buffering panel having a plurality of horizontal air-exit slots adjacent an upper portion.

Abstract: A hood device for grill comprises a hood, a telescoping tubing, a filter assembly, a grease cup, and an external fan. The hood partially covers a grill at a first elevated vertical position and collects smokes from the grill. The telescoping tubing extends from the hood and is configured for ventilating, and telescoping between the first and second positions. The filter assembly is disposed at a lower end of the telescoping tubing, and comprises filter with concentric and cylindrical layers. The grease cup is for collecting grease from the filter. The fan is for building up an ascending air current inside the telescoping tubing. A velocity of the ascending air current is determined according to the first elevated vertical position, a ratio of a diameter of the hood to a diameter of the grill, and a surface temperature of the grill.

Abstract: A fume hood is described for use in removing material from, or inserting material into, the opening of a container. The fume hood enclosure has a floor with an opening for insertion of the upper end of the container into the enclosure. The floor includes a circumferential groove around the opening, preferably in a raised shoulder. An annular flexible membrane having an inner diameter smaller than the diameter of the opening is placed in axial alignment over the opening and the groove. A vacuum is drawn on the groove through a vacuum port to pull the section of the membrane above the groove into the groove, holding the membrane securely in place during use. If desired, a retainer can be placed in the groove above the membrane to prevent movement of the membrane in the event of a loss of vacuum.

Abstract: An elongated, cantilever baffle for a fume hood is provided. The baffle has a V-shaped bottom, including a right bottom portion and a left bottom portion that form a substantially horizontal edge. The baffle also has a substantially vertical left wall and a substantially vertical right wall. The substantially vertical left wall has a top edge and a bottom connected to the left bottom portion of the V-shaped bottom. The substantially vertical right wall has a top edge and a bottom connected to the right bottom portion of the V-shaped bottom.

Abstract: An exhaust fan 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 bearing chamber and surrounding annular space. A fan driven by a shaft extending downward from the bearing 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.

Abstract: The present invention is a push-pull ventilation hood having a push device to obtain a push air flow and a pull device to exhaust contaminant flow with an exhaust opening and the two devices properly coordinated with each other, wherein, when the push flow flows through a contaminant source, a contaminated flow of the push flow is exhausted through the exhaust opening. Based on the design process according to the present invention, a push-pull hood with the highest efficiency of push velocity can be designed and the push-pull hood can economically and effectively control the contaminant source.

Abstract: A biological safety cabinet (BSC) has an air curtain to isolate air inside and outside the BSC. A most preferable slight concave curtain of air can be obtained. With the curtain, neither contamination in the BSC leaks out nor outside contamination enters the BSC. Furthermore, no circulation is formed in the BSC by blowing the air curtain. Thus, the operator using the BSC and the product in the BSC are both well protected.

Abstract: The present invention relates to a welding booth that has a small foot print and can be joined to other booths for maximization of floor space use.

Abstract: A fume hood having a retrofit drive assembly includes an elongated lifting piece, such as a toothed rack, which attaches to a fume hood sash at connection point that minimizes stress on the sash. The retrofit drive assembly also includes a drive motor driven rotary engagement member, such as pinion, for opening and closing the sash. This arrangement allows for easy field retrofit, and requires limited intrusion from behind the upper regions of the existing fume hood.

Abstract: A ductless fumehood system comprising: at least one ductless fumehood comprising a housing; a workspace formed within the housing; a door for selectively closing off the workspace; an air inlet for introducing air into the workspace; a master module for receiving air from the workspace, purging unwanted substances from that air, and then exhausting that filtered air to the ambient room atmosphere; and a slave module for receiving air from the workspace, purging unwanted substances from that air, and then exhausting that filtered air to the ambient room atmosphere; wherein the slave module is in communication with the master module such that the master module central processing unit is capable of (i) controlling the operation of the active elements of the slave module, (ii) detecting a function failure of the slave module, and (iii) activating the master module alarm in the event of a failure within that slave module.

Abstract: 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.

Abstract: A fume hood comprised of first and second side walls, a back wall, a work surface, and a top wall, the walls and work surface defining a work area, an access opening for providing a user access to the work area, a movable sash member disposed for vertical movement across the access opening, and an anti-cocking drive mechanism mechanically coupling a drive motor to the movable sash member.

Abstract: A space conditioning system for a building including production and occupied spaces provides precise control of exhaust and space conditioning equipment by taking into account multiple conditions and by using predictive control. The control method and system are illustrated by a commercial kitchen ventilation application.

Abstract: Hood, in particular associable to a cooking oven for professional kitchen applications, comprising a catalytic converter, a fan adapted to extract gases, fumes and vapors from the cooking cavity of said oven, a first intake aperture adapted to enable said gases to flow from the interior of the cooking cavity of said oven into said extractor hood, a third aperture adapted to enable said gases to be exhausted from the interior of said extractor hood into the outside ambient, a channel connecting said intake aperture with said exhaust aperture, and within which there are arranged said catalytic converter and said fan, as well as a condenser for condensing the water vapor and condensable fats contained in the gas flowing through said channel; in said channel there is provided a second intake aperture adapted to take in air from the ambient surrounding the oven.

Abstract: A simply-constructed paint-spraying platform comprises: a platform body comprising a top wall, a ventilation part, a bottom wall, two support plates, and a backing plate. When in use, the paint-spraying platform is expanded, and the article to be painted is hung on the first and second hooking holes or placed on the backing palate for spraying paint by using a spray gun. Therefore, the advantages including easy carriage, good ventilation, low cost, and enhanced steadiness can be provided.

Abstract: A method and apparatus for applying an atomized liquid solution upon a person, comprising a spray enclosure booth; an exhaust vent located below an anticipated user's facial area zone, the exhaust vent disposed within the bottom tray or a lower area of at least one wall or a lower area of a door and configured for exhausting ambient atomized liquid solution from the spray enclosure booth; a rigid conduit support defining a central air flow conduit connected to a bottom tray and pneumatically connected to an exhaust vent and providing structural integrity to the enclosure booth; an atomizing spray head assembly movably connected to the rigid conduit support and physically supported by the rigid conduit support; and an exhaust system configured to exhaust ambient atomized liquid solution from the spray enclosure booth by drawing atomized solution into the exhaust vent then through and out of the rigid conduit.

Abstract: A fume hood system having a decommissioned mode. A fume hood may be required to maintain a minimum flow from its enclosure holding fume type substances via an exhaust external to the hood. However, if the fume hood is considered not in use or not containing fume type substances, it may be put into a decommissioned mode not necessarily having a flow requirement. This mode may be entered by pressing a sequence of buttons on a monitor, operating a switch, receiving a signal from a building management system, or the like, provided that certain criteria for non-use are met by the fume hood. The decommissioned mode may also be entered or exited automatically. Status of the fume hood, as to in-use or decommissioned, may be reported to a building management system for monitoring, reporting, and/or command purposes.

Abstract: A toxic gas exposure preventing system for an anatomic practice room is provided which not only can obtain a satisfactory toxic gas exposure preventing effect without impairing workability but also permits the use of existing dissecting tables as they are without requiring any special work such as an exhaust duct installing work. A push hood having a uniform air flow blow-off mechanism and a pull hood having an air flow suction/exhaust mechanism are disposed independently of each of the dissecting tables in such a manner that at least a portion of a uniform air flow passes in contact with a donor body on the dissecting table and is thereafter sucked into the pull hood. Further, a filter having a toxic gas adsorbing function is installed within the pull hood.

Abstract: The present invention provides a preventive maintenance hood suitable for a reaction chamber of a semiconductor machine and connected to an exhaust pipe. The preventive maintenance hood includes a hood body, an air curtain forming apparatus, and an exhaust pipe connector. The hood body includes a first opening and a second opening. The first opening is located at a bottom of the hood body and adapted to cover an exit of the reaction chamber, while the second opening is located on a sidewall of the hood body. The air curtain forming apparatus is disposed on the hood body and located at an edge of the second opening. The exhaust pipe connector is mounted on the hood body and connected to the exhaust pipe.

Abstract: A clean room unit which is equipped with a work room and a clean bench unit can be independently installed inside a building, can generate an air shower in the work room, and can realize miniaturization and cost reduction. The clean room has a work room, a clean bench unit which has a work opening and has the work opening installed to look onto the work room, an air conditioning system which can perform purification and pressure control of air inside the work room and the clean bench unit and can generate an air shower in the work room, and a control unit. The air conditioning system is controlled by the control unit to switch exclusively between the air shower mode, the ventilation mode, the positively-pressurized work mode, and the negatively-pressurized work mode.

Abstract: A biosafety cabinet includes one or more air filters below the work surface and a system for holding, sealing, replacing and disposing the air filters through the work access opening of the biosafety cabinet. The air filters under the work surface of the biosafety cabinet capture particulates entering the cabinet from the exterior environment and the particulates within the cabinet's work chamber. Instead of a mechanical clamp, the perimeter of the air filters are sealed using a gasket and a tape, eliminating the accumulation of the contaminants around mechanical clamps. The air filters may be accessed through the work access opening of the biosafety cabinet, packaged for disposal and removed from the biosafety cabinet without being exposed to the exterior environment. A filter cover with an adhesive surface is used to cover and lift the used, contaminated air filter within the biosafety cabinet.

Abstract: A microwave range having a hood for removing contaminated air includes a chamber and first and second vent fan assemblies respectively positioned at opposite lateral sides of the chamber. The first and second vent fan assemblies draw contaminated air in through an air inlet located on a bottom surface of the microwave range below the chamber, and exhaust the air drawn in through the air inlet.

Abstract: An apparatus is described for transferring hazardous material between the interior of a container and the chamber of a fume hood having a port that includes a flexible enclosure with an upper surface, a lower surface and a side surface; a first conduit extending from the enclosure to connect to the port; a second conduit extending from the enclosure to connect with the container; and a pair of glove ports in the enclosure outer wall, including sleeved gloves extending into the enclosure, whereby the interior of the container and the chamber of the fume hood are accessible through the glove ports. The apparatus may also include means for supporting the enclosure in an open position above the container.

Abstract: Embodiments of the present invention provide a blower enclosure configured to secure to a base and house a blower. The blower enclosure includes a main body defining an internal blower chamber, and at least one access door configured to open to allow access to the blower. The enclosure may also include a gland plate secured over a preformed opening in the main body. The gland plate may include an O-ring configured to sealingly engage an outlet pipe of the blower. The enclosure may further include a fixed filter shroud configured to allow a user to install and remove a filter element without the use of a tool.

Abstract: The present invention comprises a hood for mounting above an area where air is desired to be exhausted. The hood includes a frame having a front wall and a cavity. A filter may be mounted to the frame in the cavity. A video display is mounted to the front wall. The video display can show a video presentation.

Abstract: The silencer for fume extracting hoods is comprised of a panel (1) consisting of a lower tray (4), an insulating intermediary sheet (5), and an upper or porous filling foamed material (6) acting as a sound absorbing and limiting or damping material. The panel is hinged to the fume extracting hood (7) by articulation means (2).

Abstract: An inflatable isolating cabin is provided for a patient to be isolated, and especially for a patient to be moved or transported, and the cabin can be formed after being inflated and collapsed into a solid form convenient for storage. It comprises a very tough and soft base, a flexible outer hood, an inflatable supporting structure, and a filtering means. Wherein a part of the periphery of the outer hood is fixedly connected with the base, and the other part is detachably connected with the base; the inflatable supporting structure is provided with at least one inflation inlet hole and after the inflation of the supporting structure, the outer hood is unfolded away from the base to form the cabin to allow a patient to lie therein.

Abstract: A ventilating hood for a water heater includes a housing having an inside formed with an air chamber, a substantially V-shaped guide board mounted in the air chamber of the housing and located between two opposite sides of the housing, and two movable boards each pivotally mounted on a respective one of the two opposite sides of the housing and each facing the guide board. Thus, the waste gas is drained outwardly from the air outlet ports of the housing smoothly and exactly by guidance of the guide board and the movable boards, thereby enhancing the air circulation in the air chamber of the housing, and thereby enhancing the working efficiency of the water heater.

Abstract: It includes a frontal sliding window (6,6a), means for actuating said sliding window until a frontal working opening (5) has been closed at least partially, and a leaktightness seal (7) on the perimeter (8) of said opening (5), and is characterised in that said seal (7) is deformable elastically from a position in which the seal (7) is kept separated from said window (6,6a), to a position in which the seal (7) comes into contact with said window (6,6a), and in that it includes means (10,11,12,13,15) for deforming said seal (7). The device and the cabinet that includes it are very simple, safe and efficient.

Abstract: A fume hood adapted to be connected to an exhaust system, the fume hood including a cabinet formed with a chamber having a generally flat bottom wall and a sash door mounted at the front end of the chamber for movement in a vertical plane to provide an access opening to the chamber. An air directing member is mounted on the cabinet outside of the plane of movement of the sash door relative to the chamber and it is generally aligned with the bottom wall. The air directing member is formed with an opening positioned to cause a first path of outside air to flow into the chamber along the surface of the bottom wall and being formed with another portion for directing a second path of outside air in a direction generally parallel to and above the first path.

Abstract: The present invention relates to controlled airflow and air distribution within a laboratory safety enclosure and in particular, to turbulence-free airflow within a laboratory fume hood. The fume hood of the present invention has a work chamber and an access opening having an upper edge. A horizontal air deflector structure is positioned adjacent to the upper edge of the access opening to divert a portion of air entering the access opening upwardly within the chamber, whereby the diverted air eliminates an airflow eddy current.

Abstract: A bottom tray is supported by four wheels and is spaced apart from a bottom surface of a top frame member having two side walls and a back wall enclosing a grated work surface. A pair of pressurized tanks containing ingredients for metallizing an object are mounted under the side walls on the bottom tray. In addition, waste liquid tanks are positioned in a middle area of the bottom tray. Three spray guns are each attached by hoses to an air pressure source and a pressurized tank so that an operator can metallize an object by sequentially operating the spray guns.

Abstract: A safety cabinet which can prevent contaminated air from leaking from a working space through the periphery of a front shutter, and which can prevent outside air from entering the working space has a peripheral structure part surrounding the working space formed with air suction ports in a part opposed to the inner surface of the front shutter connected to a negative pressure passage formed outside of the working space. The negative pressure passage guides air sucked through the air suction ports from the inside and the outside of the working space, toward a filter for purification of the air.

Abstract: Apparatus, systems and methods for use in three-dimensional printing are shown and described. Various embodiments of the invention allow for more precise and controlled delivery of heat to achieve interlayer drying; isolation of the working region from the outside for reasons of cleanliness and in connection with the vapors of organic solvents; better control of the temperature of the working region; better accuracy in the flowrates of binder fluid dispensed; matching of delivered flowrates for multiple dispensers; verification of delivered flowrate or drops; provision for easier changeover of the machine from one powder to another; cleanability; and other needs.

Abstract: A substantially cubic work space extends from an upper opening to the interior of a housing. A substantially cubic lower space extends from a lower opening to the interior of the housing. A front cover covering the upper opening is provided on the front of the work space. The front cover is, for example, a transparent resin sheet bent and protruding from the upper opening to the interior of the work space, and is held, by a horizontal rod, in the form of the letter L in cross-section. A clean bench having a simple structure, easily installed, and being capable of achieving a high level of cleanliness even if installed in a relatively unclean environment can thus be provided.

Abstract: A safety cabinet which can prevent contaminated air from leaking from a working space through the periphery of a front shutter, and which can prevent outside air from entering the working space has a peripheral structure part surrounding the working space formed with air suction ports in a part opposed to the inner surface of the front shutter connected to a negative pressure passage formed outside of the working space. The negative pressure passage guides air sucked through the air suction ports from the inside and the outside of the working space, toward a filter for purification of the air.

Abstract: According to the present invention, in a carrying system comprising a carrying vehicle and a manufacturing apparatus the interior of which is kept cleaner than a surrounding environment, manufactured articles to be transferred are prevented from being contaminated by foreign matter or the like attached to transfer ports. A carrying vehicle includes a running unit 14 that runs along a predetermined carrying path, a cleaning unit 12 that supplies cleaned air, a housing section 13 to which the cleaned air is supplied and in which manufactured articles are housed, a transfer port 11 which is formed in a side of a housing and through which a manufactured article is loaded into or unloaded from the housing section 13, and an air injecting section 19A that blows out air toward the transfer port 11.

Abstract: An air flow monitoring and control system with reduced false alarms includes an alarm sensor for monitoring air flow in a fume hood or the like, set to provide a warning if air flow drops below a predetermined amount. A local controller monitors the alarm, and disables it when the hood is set to reduced air flow, whether by a local timer or by command of a central control system. Optionally, the controller itself can operate a variable speed drive to reduce air flow on a timed basis, and the controller can communicate with facility management through a dialer or the Internet, or can interface with a central control for the facility through a facility bus.

Abstract: A sanding hood has a bottom vent for above a bottom shelf attached to a sanding bench with the shelf aligned with the top of the bench. A series of halogen lights attach above the bottom vent to shine on the bench. An upper shelf above the lights shields the worker's eyes from the lights. The upper shelf has sandpaper dispenser rolls and a flat top for storage.

Abstract: A device for regulating the air volume flow for a laboratory exhaust, has a rectangular housing (6) which can be arranged on the laboratory exhaust. The device is equipped with inflow devices that can be connected to the interior of the laboratory exhaust and with outflow devices (8, 12, 13) that can be connected to an exhaust air system. The interior of housing (6) is divided by a partition (17) into two parts, namely a calming part on the exhaust side and a measurement and regulating part on the outflow side, and these two parts are connected by an air deflection area (18). A rectangular measurement orifice (20, 25) has pressure measurement devices (22, 23, 24, 28, 29) and a rectangular regulating flap (21) arranged one after the other at a distance in the direction of flow between a housing wall and the partition (17).

Abstract: An apparatus for isolating airborne pathogens created during a procedure performed on an individual's extremity includes a transparent, dome-shaped shield having first and second openings therein to allow two individuals to insert their respective extremities into the shield, said first and second openings being located on opposite sides of the shield, and said shield further having a ventilation opening located generally between the first and second openings; an air-cleaning filter located at the ventilation opening; and a fan mounted to the shield and communicating with the ventilation opening and the air-cleaning filter with the filter located adjacent the inlet side of the fan, whereby fumes created during the procedure are directed through the filter.

Abstract: A fume exhaust apparatus for cooking stoves includes a fixing base; a connection assembly pivotally mounted on the fixing base; a transparent hood assembled with a lower end of the connection assembly, and having a handle and a through hole; a fume-exhaust hose having one end connected to the through hole and the other end connected to a filter box and an air-suction motor; the air-suction motor connected with a control switch via a power-supply cord, and having one side connected with an air-exhaust tube. After the fixing base, the filter box and the air-suction motor are secured to a wall, the hood assembled in suspension can be moved to be positioned above a cooking vessel or directly covered on the cooking vessel, thereby efficiently exhausting fumes outdoors to keep the inside clean such that users can be relieved from the fumes to keep good health, very convenient in use.

Abstract: The present invention relates to controlled airflow and air distribution within a laboratory safety enclosure and in particular, to turbulence-free airflow within a laboratory fume hood. The fume hood of the present invention has a work chamber and an access opening having an upper edge. A horizontal air deflector structure is positioned adjacent to the upper edge of the access opening to divert a portion of air entering the access opening upwardly within the chamber, whereby the diverted air eliminates an airflow eddy current.

Abstract: Low-cost, potentially disposable, hazardous material handling and anti-contamination hoods are described, that provide a very high level of protection of either personnel, in the case of a hazardous material handling hood, or the process contained in the hood in the case of an anti-contamination hood. Once contaminated these hoods can be hermetically sealed to contain the contamination so that the hood can be moved or shipped for disposal or analysis of the contaminants prior to disposal.