Abstract: An air-conditioning register includes a cylinder-shaped retainer having opposite inner surfaces, a fin assembly including a plurality of fin members disposed in the retainer, a first connector connecting the fin members, a second connector, and a guide guiding the second connector on a predetermined track. The fin members includes paired fin members disposed in proximity to the opposite inner surfaces of the retainer, at least one of the paired fin members swinging by a swing angle smaller than that of all of the other fin members, and functioning as a dummy fin member keeping a constant angle independently within a predetermined swing-angle range where all of the other fin members swing. The second connector connects the dummy fin member and all of the other fin members while absorbing a swing-angle difference between the dummy fin member and all of the other fin members.

Abstract: A damper assembly is provided having at least one damper blade that operates in a normally open position. A fusible link is connected to the damper blade to maintain the damper blade in the open position against a biasing force tending to close the damper blade. The fusible link fails upon an occurrence of a predetermined condition. A damper mechanism is provided including a locking mechanism linked to the damper blade that resists opening of the damper blade when the blade has closed due to failure of the fusible link.

Abstract: The high velocity and high dilution exhaust system uses a centrifugal fan provided with a tapered nozzle. The nozzle compresses the airstream exiting the fan to increase back pressure and velocity. The air flow from the fan enters a stack having a venturi further increasing the velocity and decreasing the pressure. The decrease in pressure causes a suction, allowing the introduction of ambient air to mix with and dilute the output of the fan. The total discharge from the exhaust stack has a high velocity resulting in a plume height and effective height of the exhaust before dispersion occurs.

Abstract: A flue liner insert with individually adjustable sides, which can be used to fasten to, extend and join two rectangular masonry clay flue tiles. Specifically, this flue liner insert fits into the interior of a clay tile and allows adjustable fastening to existing masonry clay tiles in a manner that can withstand common loads and also not interfere with the chimney draft. This flue liner insert can be used to extend masonry chimneys, join clay flue tiles, anchor ceramic chimney pots, partially or fully line existing chimneys, and mount standard or integrated chimney caps.

Abstract: The air outlet device (10) for the interior of a vehicle, particularly for being arranged above a seat of a vehicle such as, e.g., an airplane, a bus or the like, is provided with an air outlet element (38) comprising at least one air inlet opening (44) and an air outlet opening (45). Further, the air outlet device (10) comprises a slide element (46) for blocking and unblocking the at least one air inlet opening (44) and an actuating element (30) for moving the slide element (46), which is arranged at the air outlet opening (45) and comprises a collar. The actuating element (30) is supported so as to be pivotable about a longitudinal axis (50) of the collar. When the actuating element (30) is rotated, the slide element (46) is movable along a curved path for blocking and unblocking.

Abstract: Ventilating system including a case mounted on a ceiling of a room, an inlet in a bottom surface of the case, and an outlet in a side surface of the case, a partition for dividing the case into an upper space, and a lower space, a fan in the upper space of the case, for drawing room air through the inlet, and discharging through the outlet, a filter assembly at the outlet for purifying air being discharged to the room, a first duct in communication with the upper space of the case for guiding outdoor air into the case, and a second duct in communication with the lower space of the case for guiding the room air introduced into the case to an outside of the room, thereby providing a ventilating system having an air purifying function.

Abstract: One embodiment relates to a modular cabin pressure regulator that can receive its destination parameter and control settings from an avionics system or a manual selector and display. The modular pressure regulator includes a removable selector, a controller, and a monitoring unit to control an electro-mechanical actuator driven valve. Such modular design allows a single unit to be used for the cabin pressure selector and display, controller, and monitoring functions. In one embodiment, the selector module can be bypassed or removed and the same pressure regulator design can provide the controller and monitoring functions to send and receive inputs from an avionics system. This embodiment can be mounted directly on the electro-mechanical actuator driven valve or elsewhere on the aircraft.

Abstract: A collapsible air vent closure is disclosed comprising a frame having a frame aperture. A closure is mounted to the frame for pivoting between a closed position and an open position. A movable vent wall having a vent orifice is interposed between the frame and the closure. The vent orifice provides an air flow path to the frame aperture when the closure is in the open position. The closure inhibits the air flow path to the frame aperture when the closure is in the closed position.

Abstract: Described herein is a Coanda-effect air distributor for distributing a flow between a number of ducts set downstream. Provided in the area that separates the initial ends of two ducts set downstream is the inlet of a recirculation duct that creates an air circulation that masks the entrance of a duct set downstream when the flow is deviated into the other duct.

Abstract: An air-distribution device based upon the Coanda-effect comprises two mobile elements that move in synchronism and in phase opposition for distributing an air flow into two ducts.

Abstract: A system and method for handling airflow in a paint booth where a primary plenum encloses a secondary plenum having a damper to control the amount of air entering the secondary plenum from the primary plenum. The secondary plenum is installed above a paint spray applicator and an anemometer. A damper at the secondary plenum inlet controls the amount of airflow from the primary plenum in real time based at least in part on the air velocity detected by the anemometer. The present invention can be employed with a system having variable density filter media extending across the primary plenum outlet to regulate the velocities of air moving through various locations of the paint booth.

Abstract: An air conditioning duct arrangement for a vehicle includes an air conditioning unit disposed near a rear wheelwell of the vehicle, a floor panel including a lower section, a rise rising from the lower section, and an upper section extending backward from the rise, and a duct which extends from the air conditioning unit in the right-and-left direction of the vehicle in an area behind the rise, and which is formed so as to open forward into a compartment of the vehicle through the rise.

Abstract: A damper unit for an air circulation system. The damper unit includes a frame defining an air flow opening, a damper vane for opening and closing the air flow opening, and a stepper motor for turning the damper vane between the open and closed positions. The stepper motor is directly coupled to the damper vane to move the vane between the open and closed positions. A shaft of the stepper motor extends through a frame of the damper unit and is coupled to the damper vane by a hub. A controller is coupled to the stepper motor to control the stepper motor.

Abstract: A roofing vent that includes a base a duct extending from the base. The duct includes a first end attached to the base and a second end having a hood or cover over the second end. A collar having an aperture therethrough is mounted from the duct such that the duct extends through the aperture, with the collar is slideably supported along the duct and captured between the base and the hood or cover.

Abstract: A fume hood optical sash sensing system for controlling the flow of air into a fume hood to maintain a constant face velocity by utilizing an optical sensing device mounted inside the fume hood that can sense the movement of a sash based on repeatable reflexive tape to produce an output control signal that corresponds to sash movement to produce desired airflow into the fume hood. The system includes an optical sensing device with a light source, reflexive tape with a repetitive, quadrature encoded pattern, a smart controller device that receives output control signals from the optical sensing device, and an actuation device capable of receiving the output signal from the controlling device to control the damper device that will result in constant face velocity across the face of the sash.

Abstract: An actively externally cooled housing with at least one electronic component having heat-dissipating capacity, has a ventilation inlet located outside the housing, the ventilation inlet generating an airflow that is guided through a lateral flow channel, the flow channel being located on any side wall of the cooled housing on which at least one electronic component with heat-dissipating capacity is located, wherein the ventilation inlet is located in a ventilation housing that is located on the top side of the active-cooled housing and has a lateral air outlet that leads into the lateral flow channel, whereby an air intake occurs through only one air inlet opening that is located on the underside of the ventilation housing and which is essentially open vertically downward, so that the ventilation unit is located in the ventilation housing in such a manner that it is protected against impurities in the ambient air

Abstract: A ventilation member having: a breathable film transmitting gas passing through an opening portion of a housing in a state in which the breathable film is fixed to the opening portion; and a support including a supporting portion for supporting the breathable film and an insertion portion to be inserted into the opening portion of the housing; wherein the insertion portion has a lock portion in an insertion-start-side end portion thereof, the lock portion having a tapered forward end, while the insertion portion is divided into a plurality of parts circumferentially at least on an insertion start side thereof.

Abstract: Systems and methods of determining static air pressure in an HVAC system are provided. Static air pressure is mathematically determined as a function of system parameters, such as blower speed, blower diameter, system volume airflow rate, and/or blower motor torque. The determined static pressure can be used during HVAC installation and during HVAC monitoring and maintenance.

Abstract: One aspect of the invention provides a vent which comprises a body member and an adjustment member. The body member comprises a vent passageway that extends from an inward side to an outward side of the body member. The body member also comprises a collar having a collar passageway that extends from an inward side to an outward side of the collar. The collar passageway is in fluid communication with the vent passageway. The adjustment member comprises a head disposed to adjustably restrict a flow of air through the vent passageway and an inwardly projecting stem having one or more stem portions. The one or more stem portions comprise one or more contact portions which engage an interior surface of the collar and which adjustably couple the adjustment member to the body member. The one or more stem portions, alone or in combination with the interior surface of the collar, define one or more collar openings that extend through the collar passageway.

Abstract: A flow direction control mechanism is provided, which includes at least a rotatable means provided in a passage of an electronic system or apparatus. The rotatable means moves to an open position by means of a force generated from fluids flowing through the passage and returns to a close position in the absence of the force. Further, a restrictor is disposed adjacent to the rotatable means for restricting movement of the rotatable means between the open position and the close position.