Abstract: A damper unit for an air handling system. The damper unit includes a damper vane to regulate air flow, and a position indicator coupled to the vane. The damper also includes a sensing device that senses when the position indicator passes in close proximity thereto. A controller receives an index signal from the sensing device when the device detects the position indicator, and the controller resets a home position for the vane upon receipt of the index signal. The home position for the vane can be reset upon initialization of the damper and periodically thereafter, such as after each complete revolution of the vane.

Abstract: A technique to provide well-balanced airflow in a computer data center that uses fan assisted tiles coupled to a host computer through a network. In an example embodiment, this is accomplished by disposing the fan tiles, including temperature and airflow sensors and a programmable switch to provide a Network address, in multiple locations in raised floor and ceiling of the computer data center. Further, the example embodiments includes coupling the fan tiles to the host computer through the network to control the fan tiles based on the feedback received from the temperature and airflow sensors to provide adaptive airflow balancing and thermal management in the computer data center.

Abstract: A device for opening or closing air vents of a car is provided. The device comprises a single opening/closing knob centrally installed between the left and right air vents. The opening/closing knob is linked at both sides to left and right dampers provided in the air vents, thereby allowing both the dampers to be simultaneously opened or closed according to a single operation of the opening/closing knob.

Abstract: A system for individualized filtering and scenting of the air of individual rooms of a building which is serviced by a ducted central forced air handling system. The system includes a conventional “tri-louvered” ceiling register and a filtering and scenting element designed to be inserted and removed from said register without the necessity of removing the register from attachment to the ceiling. The filtering and scenting element is a filtration media disposed between layers of supporting frame-work.

Abstract: A window assembly (1) enabling an innovative manner of adjustably allowing an air circulation between an outside environment of the window assembly (1) and an inside environment of the window assembly (1), the inside environment not being affected by wind and/or precipitation conditions in the outside environment as a result of said circulation. The window assembly (1) comprises a bottom section (15) and at least one intermediate section (17) placed above the bottom section (15) and operatively connected thereto, an air circulation being carried out between a front side (11a) of the bottom section (15) and a rear side (13b) of the intermediate section (17) in an indirect manner via a bottom side (19) of the intermediate section (17). Regular means (21) are also provided for regulating the passage of air through said bottom side (19).

Abstract: A ventilation cap (3) for a motor vehicle roof (1) for ventilation of the motor vehicle interior (4) and a roof with such a ventilation cap, in which the ventilation cap (3) is formed to be oblong having an air duct with a front air opening (6) and with a rear air opening (7) which discharge above the motor vehicle roof (1), the air duct being flow-connected to the motor vehicle interior (4) via a flow path which is formed in the ventilation cap (3). The motor vehicle roof (1) is formed preferably as a glass roof with at least two glass surfaces (2a, 2b), on which the ventilation cap (3) is mounted essentially a central longitudinal axis.

Abstract: A fixed blade air mixing apparatus includes a plurality of radially extending vanes which extend away from a common center and terminate at their outer ends within a polygonal shaped enclosure. The plurality of vanes may include an inner section which is curved or pitched in one direction, and an outer section which is curved or pitched in a second direction away from the inner section, the inner and outer sections sharing a common leading edge. In another embodiment, the vanes extend straight without a curvature. The apparatus is intended for use in eliminating stratification of airstreams of different temperatures flowing through a common passage, for example, in heating, air conditioning, or other ventilating ducts. The vanes are designed to establish downstream turbulence of the airstreams passing therethrough which produces optimum mixing effectiveness and a uniform velocity profile of the air downstream of the mixing apparatus with a minimum pressure drop as the air flows through the apparatus.

Abstract: A computer housing ventilation arrangement includes a computer case having an opening in the bottom panel, a wire gauze filter mounted in the opening of the computer case, and electric fan mounted inside the opening and adapted to draw outside cooling air upwardly into the inside of the computer case through the opening to lower the inside temperature of the computer case, and a deck adapted to support the computer case above a flat surface.

Abstract: A duct cover for installation on a duct having a known sectional area defined by the duct exterior margin, includes a cover envelop having a body, the body having an open end and an opposed closed end with a center portion extending between the open end and the closed end to define an envelop enclosure, the body being substantially impermeable relative to airborne particulate and moisture, and an elastic member being operably coupled to the body open end and having a relaxed disposition and an expanded disposition, the expanded disposition defining an opening that is area that is greater than the duct sectional area, the elastic member being contractable from the expanded disposition to a duct conforming disposition in compressive sealing engagement with the duct exterior margin. A method of installing a duct cover on a duct is further included.

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 wooden vent cover has fixed vanes with major vane surfaces at angles which enhance the throw and spread of air flow through the vent cover. A vent assembly with a wooden vent cover having optimized vane major surface angles including an air flow regulator in combination with the wooden vent cover. The air flow regulator may be a slidable member or other configuration and may be held in place by couplers.

Abstract: An apparatus (10) includes a pressure relief valve (12) for relieving air pressure from a passenger compartment (76) of a vehicle (66). The pressure relief valve (12) enables airflow from the passenger compartment (76) to atmosphere (78). The apparatus (10) also includes a member (14) for reducing noise entering the passenger compartment (76) as a result of a backflow of air through the pressure relief valve (12) from atmosphere (78) to the passenger compartment (76). The member (14) includes structure (112, 114) for attaching the member (14) to the pressure relief valve (12).

Abstract: An instrument panel (2) includes a surface-side molded panel member (3) made of a synthetic resin and a back-side molded panel member (4) made of a synthetic resin. The back-side molded panel member (4) is vibration-welded to the surface-side molded panel member (3) through a plurality of projections (5) existing on its surface opposed to the surface-side molded panel member (3), and a heat-insulating gap (6) is left between both of the molded panel members (3, 4). An air-conditioning duct (10) is formed using a portion (22) of the back-side molded panel member (4) as a portion of its peripheral wall. Thus, it is possible to provide an instrument panel-air conditioning duct assembly (1) for a vehicle, which is produced at a reduced number of steps.

Abstract: An air vent for ventilation installations in vehicles comprises a housing (10) which defines an air outlet channel (12), and a manual operating element (24) formed by a partial sphere to adjust direction and flow rate of air delivered by the vent. The operating element (24) is mounted in the housing to be rotatable about two axes perpendicular to each other. The air vent further comprises a first set of blades (18) that are pivotally mounted in the air outlet channel (12) and coupled with each other for joint motion, an actuating arm (28) connected with the operating element (24) and adapted to pivot about one of the two axes, and a coupling link (30) connecting the blades with the actuating arm.

Abstract: A return air apparatus is provided with a ceiling template, which is mounted to an air comfort appliance unit at the ceiling of a recreational vehicle, a down draft diverter, a return air cover, and a return air grille. The ceiling template has a discharge opening and a return opening divided by an air barrier. The return air cover has a direct discharge opening and a return opening positioned below the ceiling template openings. The return air grille has a first section that communicates with the discharge opening of the ceiling template and a predetermined area of the interior of the recreational vehicle, and a second section that communicates with the return opening of the ceiling template and the interior of the recreational vehicle.

Abstract: Based on a hollow column (1), terminating at the bottom in a baseplate (2) and at the top in a core (3) from which vanes (4-4?), also hollow and connected with the column (1), emerge; a motor-fan (6-7) is installed in the baseplate (2), activated by means of a circuit breaker (8), which absorbs air from the outside through the lower and open end of the baseplate (2), and delivers it to the vanes (4-4?) from which it passes to the outside through opposite nozzles (5), so that this flow of air causes a rotary movement of the vanes (4-4?), by reaction, and said vanes, in their rotation, form a curtain against solar radiation, while simultaneously moving air below them. The wall of the column (1) can be translucent to allow the light generated by an internal spotlight to pass through it and within said column an electrical resistance or other means of heating that allows the ventilator to provide hot air, can be installed; the external surface of said column forming furthermore an advertising panel.

Abstract: In an air-outlet switching device of a vehicle air conditioner, a first rotary door is disposed to open and close a foot opening portion and a communication path, and a second rotary door is disposed to open and close a defroster opening portion and a face opening portion that are provided downstream of the communication path. When the first rotary door is operated at an intermediate position to open both of the foot opening portion and the communication path, an air distributing guide member of the second rotary door is positioned opposite to an outer peripheral door surface of the rotary door, to be separated from the outer peripheral door surface by a predetermined distance to a radial outside. Accordingly, it can prevent a variation of an air amount blown from the defroster opening portion due to a variation of the intermediate operated position of the first rotary door.

Abstract: A register assembly for covering an air duct opening is comprised of a faceplate, a base, a damper mechanism and a filter frame that are easily assembled together. Most if not all of the component parts may be constructed of plastic reducing the manufacturing cost of the register assembly. The faceplate can be snapped onto the base or manually removed from the base without the use of fasteners or tools. The faceplate is replaceable, allowing the use of various ornamental designs of the faceplate grid on the same base containing the damper mechanism and filter frame. The filter frame is easily removed from the base to allow replacement or cleaning of the filter materials supported in the frame.

Abstract: A fume hood is pivotally mounted on a vertically extending axle fixed to a chemical tank and extending through a sleeve in the hood allowing the fume hood, with a flexible coupling to an exhaust blower, to pivot from a use position adjacent the tank to a position pivoted away from the tank to allow an operator to gain access to the tank. In one embodiment, the hood includes a support leg for supporting the end of the hood remote from the pivot connection to the tank.

Abstract: A motor-vehicle dashboard incorporating an air distribution system that includes suitable means for controlling the deviation of airflow in the various ducts (3) associated with the outlet vents (2) on the dashboard, using the Coanda effect.