Abstract: A ventilation system for an air conditioning system includes dampers, a heat exchange unit, and a control unit. One damper controls the flow of ambient air into the system. The other damper controls the flow of relief/exhaust air that is utilized to scavenge energy from return air from a room or space being cooled (or heated) by the air conditioning system. The ventilation system utilizes a control algorithm in the control unit to calculate, at stepped spaced apart increasing room ventilation rates, increasing CO2 concentrations in the air in the room that are below a maximum desired CO2 concentration in a room. The control algorithm permits a control unit in the ventilation system to open and close the dampers to maintain a CO2 concentration in the room that is below the desired CO2 concentration level.

Abstract: An adaptor for a passive roof vent is presented having a base securable to a roof deck and an integrally moulded stepped collar extending from the base on one side for connecting to different air duct sizes which defines a discharge end for an air flow passageway. A central well is defined by the collar adjacent to and below the base and is open towards the other side of the base and has a hinge pin for at least one flapper valve retained in the well below the base. At least one flapper valve, hinged to the hinge pin, pivots about a closed position to which the flapper valve is biased by gravity and an open position in which the flapper valve is opened by air pressure from below within the air flow passageway. The flapper valve remains partially within the well when the flapper valve is open.

Abstract: A covering device covers a front area of a device for the passage of air. The device for the passage of air fits in an opening in a wall of a casing, in particular a casing of waste heat producing components, of an electronic cupboard, or of a switch cupboard. The covering device also covers a filter mat of the device for the passage of air. The covering device includes a cover covering the filter mat with a number of inclined lamellar elements, each lamellar element has in its upper area a section with a hook-type configuration orientated against the air admission.

Abstract: A door has a stile and rail frame and a center element secured to the stile and rail frame. Openings extend through the margins of the center element, and inside and outside outer skins or elements are secured to the stile and rail frame. The inside and outside outer skins have openings adjacent to and laterally spaced apart from the openings through the margins of the center element, whereby air flows through the opening in the inside outer skin, through the openings in the margins of the center element, and through the opening in the outside outer skin in a non-linear manner to prevent pressure buildup in a room to comply with the government recommended pressure of three pascals or less.

Abstract: An automobile air vent register is described. The register uses a pair of rotating vent cover doors and an elongate opening in a configuration providing good airflow control within a limited space. Exemplary methods and structures for controlling and directing airflow are provided.

Abstract: The vent port employs a pair of mated housing parts that define a space for two flap valves. Each flap valve is formed of an aluminum bracket with an aperture for the passage of air and a silicone flap that closes over the aperture. The flap valves are oriented so that gravity enhances the closing of the flaps. Resistors are mounted on the brackets to heat the brackets at a low wattage. In one embodiment, the flap valves are vertically arranged over each other. In another embodiment, the flap valves are horizontally disposed in criss-crossing relation.

Abstract: An HVAC unit is provided for treating air in a passenger cabin of a vehicle. An HVAC housing has a recirculation entry section, a fresh entry section, a blower section, and an output section. A blower is mounted to the blower section for driving an airflow from the HVAC housing out through the output section into the passenger cabin. A recirculation opening is provided proximate the recirculation entry section for providing at least a base recirculation flow from the passenger cabin into the HVAC housing whenever the blower drives the airflow. A climate sensor is fluidically coupled within the base recirculation flow for sensing a climate characteristic representative of the air in the passenger cabin.

Abstract: The invention relates generally to the field of airflow boosting devices. In particular, the invention relates to a booster fan for installation into a vent opening of a duct system in a forced air circulation and delivery system. In an embodiment, the booster fan includes a register plate for covering a vent opening. An opening or openings on the register plate provide an air outlet. A housing is secured to the register plate for enclosing a crossflow fan therein. The crossflow fan is disposed adjacent and spaced from the register plate and resiliently supported at both ends. A motor is resiliently connected to the crossflow fan. The housing also has an aperture for providing an air inlet communicating with the duct system. Preferably, two arcuate air deflection panels are provided in the housing for connecting the air inlet and air outlet to form a guided air passageway.

Abstract: Described is a mobile plant for the aspiration, treatment, suppression and depuration of fumes and/or dust and/or gaseous mixtures coming from processing of metals or other materials, and in particular from the processing of the metals with flame cutting, by means of which even small production units or larger production units but with limited quantities of materials to be processed or processed in an occasional manner with significant emission of fumes and/or dust can prevent the dispersion into the atmosphere of the fumes and/or dust and can treat the fumes and dust; according to this invention, the mobile plant for the aspiration, treatment, suppression and depuration of fumes and/or dust and/or gaseous mixtures coming from processing of metals or other materials comprises two separate units which integrate and act in conjunction with each other: a removable and transportable hood which is movable from a processing area to a standby area, under which the processing is performed which cause fumes and dust,

Abstract: A gas expansion module for use with semiconductor wafer loadlocks and other regulated-pressure components of semiconductor processing tools is provided. The gas expansion module may be barometrically isolated from the loadlock or other component and pumped down to a vacuum condition while the loadlock is performing operations at a higher pressure, such as ambient atmospheric conditions. After an initial pump-down of the loadlock is performed, the gas expansion module may be fluidly joined to the loadlock volume and the gases within each allowed to reach equilibrium. A further pump-down of the combined volume may be used to bring the loadlock pressure to a desired vacuum condition.

Abstract: On a centerline parallel to an air blowing direction inside a retainer, a ball joint with a ball is disposed. On a turning louver, a central axial support portion from which axial support portions are projected radially is disposed at the center of a cylindrical frame. The central axial support portion is attached tiltably and turnably by fitting a ball hole provided at the center with the ball. Inside the cylindrical frame, movable fins are axially supported turnably at substantially even intervals by pivots in radial directions, and the inner-side portions of each movable fin are axially supported by each axial support portion. To the front surface side center of the central axial support portion, an operation portion is fitted turnably around the centerline of the turning louver, and the operation portion is linked to the inner-side portions of each movable fin via a bevel gear mechanism.

Abstract: A ventilation device for supplying air to a clean room having a passage duct (16) with a waste air inlet (13) for receiving waste air form the room and a supply air outlet (14) for discharging supply air (34) to the room. A speed controllable rotatable fan (49) is provided in the passage duct (16) for conveying air from a suction chamber (47) coupled to the waste air inlet (13) to a pressure chamber (48) coupled to the supply air outlet (14). An outside air duct (22) is provided for receiving outside air (27) which is emitted into the passage duct (16), and an exhaust air duct (28) is provided for receiving a part of the waste air (32) extracted from the room for exhaust to the outside. First and second air flow regulators (36, 37) are provided in the respective air ducts (22, 28), and a control unit (68) is provided for controlling operation of the air flow regulators (36, 37) and the rotational speed of the fan (49).

Abstract: An operation knob that includes fin insertion holes formed at both side surfaces of the operation knob, a jig insertion hole formed at a side of the operation knob, and a separation portion formed by separating a part of the jig insertion hole. In the separation portion, a connection portion partially connects an upper facing side and a lower facing side of the connection portion and retains a predetermined clearance therebetween. The first separation surface of the connection portion on the upper facing side and the second separation surface of the connection portion on the lower facing side are contacted with each other, thus even if the connection portion is deformed so that the clearance becomes narrower, a minimum clearance corresponding to a height of the connection portion is retained based on the first separation surface and the second separation surface contacting each other.

Abstract: Doors having stile and rail frames and center elements secured to the stile and rail frames and the center elements have margins inwardly where the center elements and the door frames overlap and openings extend through the margins outwardly from openings in skins, and inside and outside skins are secured to the stile and rail frames. The inside and outside skins have openings adjacent to and laterally or inwardly spaced apart from the openings through the margins whereby air flows through the openings in the inside skin, through the openings in the margins, and through the openings in the outside skin in a non-linear manner to prevent pressure build up in rooms to comply with the Department of Energy maximum recommended room pressure of three pascals or less.

Abstract: First and second upstream fins and first and second downstream fins are arranged in the air passage of air-conditioning air to pivot. The first upstream fin includes an upstream body with a cutout extending upstream from the downstream edge. A transmission shaft, which extends along upstream fin shafts, is arranged in the cutout. The first downstream fin includes a downstream body with a slidable operation knob. The operation knob includes a fork that is rotationally supported with a support shaft. The fork includes a pair of transmission pieces, which extends upstream from the operation knob and sandwiches the transmission shaft. The transmission shaft includes a pair of stoppers, which is located at positions that are spaced from each other in the extending direction of the transmission shaft and that sandwich the transmission pieces. The stoppers are caused to contact the transmission pieces by operation of the operation knob.

Abstract: A solar powered fan kit is provided for installation in a roof and in the ridge of the roof. The solar powered fan kit includes a fan attached to a fan bracket. The fan bracket is configured to be suspended from a roof within a ridge vent of the roof. A solar panel is attached to the roof to supply power to the fan.

Abstract: A vent cover is configured for attachment to a downwardly-facing surface, such as a soffit panel of a building roof overhang. The vent cover includes a housing coupled to a base portion, the housing defining a fluid discharge outlet and fluid passageway, with the outlet being selectively blocked by at least one movable door. The door is hinged at its upper end portion and is biased to a closed position by gravity. A sufficiently high air pressure will raise the door and permit an outflow of air through the discharge outlet. Where separate inner and outer doors are provided, the outer door may be manually movable to its open position while the inner door remains closed, so that the inner door continues to restrict access to an interior of the housing.

Abstract: A method for providing purified air to an occupant of a seat in a mask lacking corporeal features that is generated by an apparatus. The apparatus includes a contaminant conditioning system that delivers purified air to a first and a second laminar flow generator. Each laminar flow generator produces a respective laminar flow that combines to form and fill a breathing space with purified air that envelopes an inhalation sphere of the occupant and inhibits air other than the purified air from entering the breathing space.

Abstract: An air conditioning apparatus and an air conditioning method for cooling a passenger space of a vehicle that accommodates a user include a tank that is capable of storing compressed air, and a control unit to release the compressed air stored in the tank into the passenger space. Energy that is generated without putting a workload on the power source or electric power of the vehicle is used for at least one process of compressing air in the tank, cooling the compressed air stored in the tank, and heating the compressed air stored in the tank.

Abstract: A shut-off damper of an air-conditioning register has a damper body serving as a frame portion and a sealing portion softer than the damper body. The sealing portion includes a distal sealing portion caused to contact an inner wall surface of a retainer at a closed position and a flexible joint portion joining the distal sealing portion and the damper body together. The distal sealing portion has a cross section configured by a projected curved portion and contacts the inner wall surface of the retainer at the curved portion. At least a part of the joint portion has an increased thickness portion having a thickness increasing toward the damper body.