Abstract: An evaporator blower for air conditioning system that can be installed into a ceiling between existing joists. The system has a chassis dimensioned to fit between the pair of joists forms an air flow pathway through which air may be cooled by an evaporator housed in the chassis. A mounting flange is pivotally coupled to the chassis and has an opening through which the chassis can pivot between a first position below the mounting flange, and thus the ceiling, to a second position above the flange, so that the chassis is above the ceiling and between the pair of joists. A diffuser is attached to the mounting flange and provides supply and return air grilles that are in fluid communication with the air flow pathway of the chassis.

Abstract: An Equipment Front End Module (EFEM) having a Front Opening Unified Pod (FOUP) dock and a tool access port, includes a robotic wafer handling system configured to transfer silicon wafers between a FOUP coupled to the FOUP dock and a process tool positioned for access via the tool access port. An air curtain system inside the EFEM is positioned to produce an air curtain across the tool access port while the port is open, acting to isolate the interior of the EFEM from the tool environment, and prevent passage of airborne contaminants into the EFEM via the access port.

Abstract: An air filter unit for removing contaminations from air is disclosed. The air filter unit includes an airflow generating device configured to generate and direct at least one airflow from an air inlet to an air outlet, a filter disposed between the air inlet and the air outlet and including at least one filter layer for removing contaminations from the at least one airflow, a heater disposed upstream of the filter and configured to heat the at least one airflow directed towards the filter, an ejection device disposed upstream of the filter and configured to inject a sterilizing agent into the at least one airflow directed towards the filter, and a duct interposed between the air inlet and the filter and configured to feed the at least one airflow to the filter. The duct includes a volute-like outlet portion, and the ejection device is arranged in the duct.

Abstract: A display enclosure can include a passive cooling system that includes an exhaust channel and a number of fans. The configuration of the exhaust channel can cause airflow to ingress through one side of the display enclosure, circulate through the display enclosure, and then egress through the same side. The exhaust channel can be positioned around the outer edges of the display enclosure to form an insulative barrier to external heat (e.g., sunlight) while at the same time removing heat generated internally.

Abstract: An air conditioning system utilizing outdoor air for cooling an indoor space wherein a rack is disposed, includes at least one rack disposed in the indoor space, the rack having the heating element, an air inlet face and an air discharge face; and at least one air conditioning device using outdoor air for cooling and unitized in accordance with the at least one rack, the air conditioning device having an air supply face and a cold air supply unit for generating cold air and being disposed in vicinity of the rack such that the air supply face faces the air inlet face to form a rack row and an air conditioning device row substantially parallel to the rack row, the rack row being formed of the at least one rack and the air conditioning device row being formed of the at least one air conditioning device.

Abstract: Ventilation system (1) of a tunnel or covered road section (2), in which the tunnel (2) comprises at least a first tunnel tube or carriageway (11; 11, 12) with a first entrance (3; 3, 5) and a first exit (4; 4, 6) for traffic (T1; T1, T2) through the at least first tunnel tube (11), and the ventilation system (1) is equipped for: —the production of a blind flow or recirculation flow of air inside the at least first tunnel tube during use, and —the controlled discharge of air from the blind flow or recirculation flow at the entrance and/or exit of the at least first tunnel tube.

Abstract: An apparatus and article is disclosed for separating intake air from exhaust air. The apparatus discloses an intake port, coupled to conduct intake air; an exhaust port, coupled to conduct exhaust air; and an air-curtain port, coupled to conduct air-curtain air to separate at least a portion of the intake air conducted by the intake port from the exhaust air conducted by the exhaust port. The article discloses a ductwork shell article, having an intake vent, an intake chamber, an exhaust vent, an exhaust chamber, an air-curtain vent, and an air-curtain chamber; wherein: the air-curtain vent is in part located between the exhaust vent and the intake vent.

Abstract: One or more embodiments of a standoff chamber system configured to generate aerosolized clouds, useful in testing or calibrating standoff detectors in a laboratory environment, includes a chamber body having vertically recirculating vortices for generation of the clouds. The standoff chamber further includes a pair of aero-windows configured to surround a pair of apertures in the chamber body, filtering and preventing escape of the cloud, while allowing direct observation of the cloud by standoff detectors.

Abstract: This patient isolation module has a transparent cubicle mounted over an hospital bed. This cubicle has a rectangular room-air intake opening at one end thereof, and an air treatment unit mounted outside the other end. The air treatment unit has fan inlet openings communicating inside the cubicle and forming a crown over the head of the bed. The air treatment unit draws air from the cubicle and causes a stream of fast-moving air to move along the cubicle, in a toe-to-head direction relative to a patient laying in the hospital bed. The air stream defines a hood-shaped envelope extending over and along both sides of the bed, to better separate a patient's breathing zone from health-care workers standing near that patient's bed.

Abstract: A gas diffusion device used in conjunction with a flow of gas from a conduit utilizing a sheet having a peripheral edge defining a surface inwardly from the edge. The surface possesses a first zone, and a second zone between the first zone and the peripheral edge. A first plurality of apertures through the sheet lie in the first zone. A second plurality of apertures through the sheet lie in the second zone. The percentage of open area of the first plurality of apertures relative to the area of the first zone is less than the percentage of open area due to the second plurality of apertures through the second zone.

Abstract: An air shutter of low cost, high efficiency, and easy maintainability is provided, which can interrupt efficiently the flowage of air across a doorway when the door is open based on the consideration of the experimental data of the flowage of air across the opening area of the doorway of a cold storage. The air shutter comprises a gatepost 12 and a gatepost 13 installed at both sides of the opening area of a doorway. The gatepost 12 is provided with a lower slit nozzle 12a, a suction opening 12b, and lower fans 12c and a suction duct 12d inside thereof, on the other hand, the gatepost 13 provided with an upper slit nozzle 13a, a suction opening 13b, and lower fans 13c and a suction duct 13d inside thereof.

Abstract: A serial fan is provided and includes a first fan and a second fan. The first fan includes a first frame, and the second fan includes a second frame. The first frame and the second frame form a frame set. The first frame has at least one first locking portion. The second frame has at least one second locking portion disposed corresponding to the first locking portion. When the first fan and the second fan are assembled, the first locking portion inserts in the second locking portion along a rotational direction so that the first frame and the second frame are connected in series.

Abstract: An air decontamination system including a sealed room to hold at least one person and the sealed room having an air inlet. The system further including a vacuum unit to create a negative pressure within the sealed room, by suctioning air through the air inlet into the sealed room and then from the sealed room into an inlet of the vacuum unit. The system still further including a work surface disposed in the sealed room at a predetermined height above a floor of the sealed room and the work surface to receive at least one mail piece and the air to be suctioned downwardly over the at least one mail piece and the work surface; and a filter unit to filter the air as the air is drawn out of the sealed room.

Abstract: Device and method for diffusing a protective flux. In order to protect one area of a service station, a more or less parallel air flow is created in the direction of the area. Above a threshold F, the air flow has a gradually increasing speed V22 and, below the threshold, the air flow speed V21 is more or less uniform along the length of a flow section in a plane P which is transverse to the direction of flow D. One possible configuration for an air flow diffusion device, which allows a confinement barrier to be created, consists of a diffusing wall comprising a main wall and a lateral wall. The main planar wall is adapted to diffuse a main laminar flow in the sterile area to be protected. The lateral wall is adapted to diffuse a lateral flow divergent from the main flow. A skirt is disposed to create an obstacle to the lateral flow and to accelerate the flow by of deflection.

Abstract: A biological hazard mitigation apparatus permitting a material handling operation in the vicinity of a work area includes a plenum pneumatically coupled and proximate to one side of the work area, a filter sized to trap biological hazards and including an exhaust port, a blower including an inlet port and an exhaust port, and ducting pneumatically coupling the exhaust port of the filter to the inlet port of the blower, wherein the filter is disposed in the plenum, and adjacent surfaces of the filter and the plenum are substantially equal in surface area. If desired, the ducting includes first and second ducts, permitting a silencer to be disposed between the first and second ducts. Methods for operating the apparatus are also described.

Abstract: The invention concerns a climatic cabinet, in particular, a climatic cooling cabinet, whose interior is loaded or unloaded with specimen slides, with the aid of a transporting device. The loading and unloading take place through a loading opening which can be closed with a door, which opening is adapted, in its size, to the dimensions of the specimen slides and is located in a sidewall of the climatic cabinet. The climatic cabinet also has a gas supply device, whose at least one gas exhaust opening is situated in such a way that the cross-section of the loading opening is covered by a gas curtain, in the area of the gas exhaust openings when gas is supplied.

Abstract: An arrangement for producing an air partition on a passage between rooms with different air temperatures has a first ventilator whose air intake is arranged in a first room, and whose pressure side is located on a heating device having one heating element and a device for regulating the temperature. The temperature regulating device is connected to a sensor in a second room for detecting the partial pressure of the water vapor. The outlet of the heating device is connected with a pair of first air-blowing nozzles that are vertically arranged on each side of the passage in the first room and provided with a slot outlet extending over the entire height of the passage. In addition, a second ventilator with an air intake is located in the second room. A pair of second air-blowing nozzles is connected with the pressure side of this air intake. This second pair of blowing nozzles is vertically arranged on both sides of the passage and provided with slot outlets extending over the entire height of the passage.

Abstract: An air barrier system is disclosed that allows the isolation of a central volume or one volume from another without the use of physical barriers. Toroidal vortices are formed at opposing end or ends of the volume to be isolated and prevent transport inward and outward. Contemplated applications include air curtains, oxygen tents, cleanrooms and testing chamber apparatus.

Abstract: An arrangement for producing an air partition on a passage between rooms with different air temperatures has a first ventilator whose air intake is arranged in a first room, and whose pressure side is located on a heating device having one heating element and a device for regulating the temperature. The temperature regulating device is connected to a sensor in a second room for detecting the partial pressure of the water vapor. The outlet of the heating device is connected with a pair of first air-blowing nozzles that are vertically arranged on each side of the passage in the first room and provided with a slot outlet extending over the entire height of the passage. In addition, a second ventilator with an air intake is located in the second room. A pair of second air-blowing nozzles is connected with the pressure side of this air intake. This second pair of blowing nozzles is vertically arranged on both sides of the passage and provided with slot outlets extending over the entire height of the passage.

Abstract: The present invention relates to a method of confining pollution generated in the top volume and/or in the bottom volume of an enclosure filled with a fluid, i.e. either a gas, which is in general air, or a liquid, which is in general water, the method confining the pollution by thermal stratification. In said method the mean temperature of said top volume is maintained higher than the mean temperature of said bottom volume by an amount that is sufficient to ensure that said two volumes are separated by a turbulent intermediate zone of narrow width, referred to as the “mixing zone”, within which a steep temperature gradient is maintained; said intermediate zone constituting a virtual confinement barrier in a horizontal plane. The present invention also relates to apparatus associated with the method.

Abstract: A device for dynamically separating two zones by a bufer zone and two clean air curtains. When transferring objects at high speed between two zones, a buffer zone which is connected to the two zones, forms a dynamic lock in order to separate them. a dynamic confinement system placed between each pair of adjacent communication zones forms an air curtain including two or three clean air jets. The buffer zone includes a blower ceiling and an intake grill facing it.

Abstract: An air curtain (14) is used to dynamically separate a zone (10) to be protected and a contaminating zone (12) communicating with each other through at least one separation zone (11), the air curtain being formed by simultaneously injecting at least two adjacent clean air jets into the same direction in the separation zone (11). More precisely, the air curtain (14) comprises a slow jet, in which the tongue (16) covers the entire separation zone (11) and a fast jet inserted between the slow jet and the zone (10) to be protected and for which the injection flow is such that it induces an air flow equal to approximately half the injection flow of the slow jet, on its surface in contact with the slow jet. Preferably, clean ventilation air is also injected into the zone (10) to be protected at a flow equal to at least the air flow induced by the surface of the air curtain in contact with the ventilation air, and in any case at a speed not less than 0.1 m/s.

Abstract: An apparatus and method for minimizing the amount of smoke to which a shielded person is exposed. The apparatus, or air rail, has a conduit and a fan. The conduit has an air outlet through which air is forced by the fan. In operation, the fan generates an air flow that enters the conduit and exits through the air outlet. The exited air flow is directed generally away from the shielded person and is interposed between the shielded person and the smoke. The exited air flow therefore creates a barrier which minimizes the amount of smoke to which the shielded person is exposed. By minimizing the amount of smoke to which the shielded person is exposed, the apparatus and method creates a better environment for the shielded person.

Abstract: The invention concerns a device for separating (100) a first (10) from a second zone (20) in which prevails different kinds of environment. The invention is characterised in that it comprises: a buffer zone (110) extending along a longitudinal axis X between the first and second zones, and communicating via an inlet (111) with the first zone (10), and via an outlet (112) with the second zone (20); means for injecting air (120, 120a) opening at the inlet of the buffer zone, for injecting on either side of said longitudinal axis X, towards the outlet of said buffer zone, two clean air jets (121, 122) at high speed, extending along oblique directions (Y1, Y2) relative to the axis X, which cross each other in a region between the inlet and the central region (113) of said buffer zone, so as to form an impassable barrier which separates the first from the second zone.

Abstract: An improved, low-cost conditioned air vestibule for use on a doorway of a refrigerated storage room permits unobstructed passage of vehicles while effectively reducing the exchange of air through the doorway and substantially eliminating precipitation both inside and outside the doorway.

Abstract: A smoke diverter system is provided including an elongated ceiling housing, an elongated outlet slot formed along a length of a bottom face of the ceiling housing. An elongated inlet slot is formed along a length of one of a pair of side faces of the ceiling housing adjacent to the top face thereof. At least one elongated intake filter is mounted between the inlet slot and the outlet slot of the housing. A vacuum fan is secured within the interior space of the ceiling housing for suctioning air from the inlet slot and excreting the same from the outlet slot.

Abstract: The present invention relates to a method for confining an atmosphere (B) in a space (4) communicating with its surroundings via at least one opening. A gas curtain (1+2) comprising a low-velocity jet (2) and a high-velocity jet (1) is generated at said opening. Characteristically, a fraction of the flow in said low-velocity jet (2) is injected into the confined atmosphere (B) and adds to the induced flowrate of said low-velocity jet (2), the size of said fraction being variable depending on the pressure within said space (4). The present invention also relates to a device for carrying out said method.

Abstract: An integrated air conditioner which can control a flow rate of a chilled air blown by a blowing fan to improve heat-exchange capacity of an evaporator is disclosed. The chilled air generated by the evaporator is flowed through a chilled air guide duct by the blowing fan, and the flow velocity and the flow rate of the chilled air are controlled by a flow rate control section formed in the chilled air guide duct. The load of a motor which drives the blowing fan is decreased by the flow rate control section, and thus heat-exchange capacity of the evaporator is improved. The air conditioner is simple in structure and is facilitated to use, and the energy consumption efficiency is improved.

Abstract: Air direction changing members are disposed in an air inversion course so that the flows of air blown from a blow port of a front panel becomes substantially uniform throughout the whole of the blow port.

Abstract: A fluid distribution panel (A) is illustrated, especially for use in a growth chamber, utilizing a plurality of spaced conical surfaces (B) which taper outwardly from a plenum into an enlarged fluid discharge opening for controlling the distribution of air across the plenum with minimal pressure drop or variation.

Abstract: A blowing port of an apparatus for washing semiconductor materials, has a plurality of passages defined within the duct of the blowing port. At least the upper portion of each passage is formed convergently to its end. The end of each passage of the blowing port forms a transverse slit so as to form laminar flow of clean air flowing substantially horizontally from the blowing port to an opposite suction port. Such laminar air flow covers the respective washing tanks, and thus it prevents vapor generated in chemical washing tanks from entering final washing tanks. Accordingly semiconductor materials washed in final washing tank or tanks are not badly influenced with the described vapor.

Abstract: An apparatus and method for providing a selected atmosphere at and within an opening to the interior volume of a furnace. Two or more paralleled diffusers adjacent to the furnace opening laminarly emit different fluids and provide a multilayer fluid curtain over the opening. The curtain has a composite modified Froude number from 0.05 to 10, and a thickness at emission of at least 5% of its extent in the flow direction. Partially covering the outside of the curtain is an optional, substantially flat, outer shield with an aperture coinciding with the furnace opening, which reduces the necessary flow rates of fluids. Optional side shields around the sides of the curtain also reduce the necessary fluid flow. A preferred diffuser comprises a porous tube in a housing with an outlet directed to emit fluid across the furnace opening. The outlet is covered with a screen to disperse the fluid flow and to protect the porous tube.

Abstract: A method and device for maintaining a clean atmosphere at controlled temperature, at a workstation accessible from a contaminated room. A curtain of gas--in the form of a slow jet and of a fast jet--is generated at the level of the openings between the workstation and the contaminated zone. The fast jet is situated at the level of the opening on the workstation side; the jets are directed approximately in parallel to the opening so that at least the external face of the fast jet reaches up to the opening. Moreover, a stream of clean gas is generated, and sent in such a way as to create a uniform sweeping, inside the volume to be protected.

Abstract: A fluid suction nozzle and a fluid-treating apparatus are used in the cleaning of air inside a local space. The suction nozzle has a suction passage and plural annular discharge passages surrounding the suction passage. The nozzle is connected with an air cleaner, etc. The air inside a local space is to be drawn in through the suction passage. At the same time, a larger amount of air is to be discharged from the discharge passages. The velocity at which fluid will flow from the outer discharge passage is smaller than that at which fluid from the same source will flow from the inner discharge passage.

Abstract: An apparatus and method for providing a selected atmosphere at and within an opening to the interior volume of a furnace. Two or more paralleled diffusers adjacent to the furnace opening laminarly emit different fluids and provide a multi-layer fluid curtain over the opening. The curtain has a composite modified Froude number from 0.05 to 10, and a thickness at emission of at least 5% of its extent in the flow direction. Partially covering the outside of the curtain is an optional, substantially flat, outer shield with an aperture coinciding with the furnace opening, which reduces the necessary flow rates of fluids. Optional side shields around the sides of the curtain also reduce the necessary fluid flow.A preferred diffuser comprises a porous tube in a housing with an outlet directed to emit fluid across the furnace opening. The outlet is covered with a screen to disperse the fluid flow and to protect the porous tube.

Abstract: In order to ensure a bidirectional dynamic separtion between two zones (10,12), between said zones is formed a gas curtain constituted by three juxtaposed gas streams or jets (28,30,32). The central stream or jet is relatively fast and serves to stabilize the two relatively slow lateral streams or jets (30,32). The latter ensure the relative confinement of the two zones by means of their tongues (30a,32a) and their flow rate is determined in such a way as to supply the relatively fast stream with the gas necessary for its full development. In the case where one (10) of the zones has a reduced volume, a low flow rate, additional gas flow can be injected into the said zone.

Abstract: An air handling system (10) and associated method for supplying filtered air to an operating room (14) in a manner which reduces concentrations of airborne bacteria and other particulates. The system (10) generally includes a plenum (18) mounted at the top of a first wall portion (22) of the operating room (14). A diffuser (48) is closely received in a diffuser opening (46) through which air is communicated from the air chamber (38) of the plenum to the operating room (14). The diffuser (48) is disposed so as to depend downwardly from a point proximate the ceiling of the operating room and converge toward the first end wall (22). Further, at least one air return (60) is provided at the second and opposite wall portion (54) of the operating room (14) for removing air from the room (14) and returning the air to the clean air supply unit (12). Another but smaller portion of the air is removed through at least one air return at the base of the first wall portion of the room.