Abstract: An air diffuser for a heating, ventilation, and/or air conditioning (HVAC) system includes a variable flow adapter including a housing and an actuator configured to transition between actuation states based on an air flow parameter in the housing. The air diffuser includes a first plurality of nozzles disposed in the housing and defining a first set of flow paths from an interior of the housing to an exterior of the housing. Additionally, the air diffuser includes a second plurality of nozzles disposed in the housing and defining a second set of flow paths from the interior of the housing to an exterior of the housing. The air diffuser also includes a valve system configured to be actuated by the actuator to control air flow through the second set of flow paths of the second plurality of nozzles.

Abstract: An air flow producer assembly includes first and second elongate mounting elements separated by an elongate gap, a ceiling girder interface member affixed to each of the elongate mounting elements, and a bridge member affixed to each of the elongate mounting elements. The bridge member includes a hollow chamber that spans across the gap and which extends upwards from the elongate mounting elements. A vane assembly is installed in the hollow chamber of the bridge member, which includes a vane that swings across at least a portion of the gap.

Abstract: The present invention relates to a suction device for a hood, comprising a motor, and further comprising an impeller driven by the motor and configured to draw an air flow and direct it into an outflow collar; the suction device further comprises at least one flap connected to the collar and hinged on one side only, the at least one flap being configured to close the collar when the impeller is idle, and to be lifted by the air flow so as to clear the collar when the impeller is rotating.

Abstract: A device comprising a fin structure, a vent disposed in the fin structure, a cooling coil disposed in the vent, a light disposed in the fin structure and wherein the fin structure is configured to create a Coanda effect for air exiting the vent.

Abstract: A linear bar diffuser includes a grille frame and blades in a stacked arrangement within the grille frame such that space is provided between adjacent blades to facilitate flow of an incoming air flow therethrough. One of the blades includes a leading edge configured to face the incoming air flow, the leading edge including an undulated contour extending along a length of the blade and into a width of the blade, the width of the blade extending transverse to the length and between the leading edge and a trailing edge of the blade.

Abstract: A plenum slot diffuser is configured to receive an air flow and includes a blade configured to guide the air flow toward a space to condition the space. The blade includes a length along which a leading edge of the blade extends, where the leading edge is configured to face an air flow. The blade also includes a width extending transverse to the length between the leading edge and a trailing edge of the blade, and including a curved profile extending along a majority of the width. The blade also includes an undulated contour extending along the leading edge and into and out of the width.

Abstract: An air guide grille is provided, the air guide grille includes a plurality of grid strips, wherein the plurality of grid strips are arranged in a plurality of rows, an air inlet side edge of each of the plurality of grid strips is of a corrugated shape, and an air inlet side edges of two adjacent rows of grid strips in the plurality of grid strips is provided in a staggered manner along a length direction of the corrugation. In order to form a corrugated air inlet between two adjacent rows of gate strips, the each of the plurality of grid strips has an air guide surface inclined toward a first direction along the air guiding direction thereof, and the first direction is parallel to an undulating direction of a corrugation. In addition, an air inlet panel and an air conditioner are also disclosed.

Abstract: A control system can provide a linear behavior of airflow as a function of damper position of each zone damper in an HVAC system. The control system incrementally closes each zone damper from a fully open position to a fully closed position, and records static pressure measurements with each change in damper position. Then, using a mathematical model that is derived from the second fan law, a correction is calculated for each damper position of each zone damper based on the recorded static pressure measurements to provide corrected damper positions at which the airflow through the zone damper exhibits a linear behavior. The corrected damper positions are stored and used during an operational cycle of the HVAC system to obtain a precise airflow through the zone dampers.

Abstract: An air diffuser for a heating, ventilation, and/or air conditioning (HVAC) system includes a variable flow adapter including a plurality of nozzles and a damper. The variable flow adapter is configured to receive conditioned air from the HVAC system. The air diffuser also includes an actuator coupled to the damper and configured to actuate the damper between a first configuration and a second configuration. The damper is configured to block the conditioned air from passing therethrough and direct the conditioned air through the plurality of nozzles in the first configuration. Additionally, the damper is configured to open to direct the conditioned air therethrough in the second configuration.

Abstract: A comfort cassette (1) and a method which comprises a pressure box (2) with an inlet (3) and a plurality of outlets (4) for through flow of a supply air flow (L1). The outlets (4) are arranged at more than two of the pressure box edges (5a, 5b, . . . 5n) and form a group (6a, 6b, . . . 6n) of outlets per edge (5a, 5b, . . . 5n). The outlets are arranged in a configuration which is changeable by outlets (4) of a cover member (8) when the cover member (8) is displaced in relation to the outlets (4) of the pressure box (4). The cover member (8) is arranged to change simultaneously the configuration of all groups (6a, 6b, . . . 6n) of the outlets, by movement of the cover member (8) in only one direction, while the supply air flow (L1) is changeable in more than two directions by movement of the cover member.

Abstract: A control system can provide a linear behavior of airflow as a function of damper position of each zone damper in an HVAC system. The control system incrementally closes each zone damper from a fully open position to a fully closed position, and records static pressure measurements with each change in damper position. Then, using a mathematical model that is derived from the second fan law, a correction is calculated for each damper position of each zone damper based on the recorded static pressure measurements to provide corrected damper positions at which the airflow through the zone damper exhibits a linear behavior. The corrected damper positions are stored and used during an operational cycle of the HVAC system to obtain a precise airflow through the zone dampers.

Abstract: A ventilation nozzle assembly is described that includes a first air outlet channel configured to provide an air flow in a first direction, a second air outlet channel adjacent the first air outlet channel configured to provide an air flow in a second direction, a third air outlet channel adjacent the second air outlet channel and configured to provide an air flow in a third direction, and a fourth air outlet channel adjacent the third air outlet channel and configured to provide an air flow in a fourth directions. An air flow from the third air outlet channel is configured reduce an impact of the air flow from the fourth air outlet channel has on the air flows from the first air outlet channel and the second air outlet channel.

Abstract: Pattern controllers located in discharge slots of an active beam comprise a series of planar paddles hinged on an axis disposed at an angle to the planar surface of a side of the discharge slot thereby producing discharged air displacement in both the horizontal and vertical directions when the paddles are rotated.

Abstract: A ventilation system for a building in some cases includes a main HVAC blower for moving temperature-conditioned air through the building plus a smaller ventilation blower for providing fresh air. A controller regulates the ventilation blower's speed to provide a target ventilation flow rate regardless of changes in the pressure differential between the indoor and outdoor air. To ensure that the target rate is appropriate for a particular building, the target flow rate is determined based on a ventilation setting that reflects a specified number of bedrooms and a specified amount of floor space of the building.

Abstract: A grate access floor panel comprising a support frame and a plurality of vanes supported by the frame, each of the plurality of vanes having an upstream end and a downstream end with respect to a direction of airflow across the plurality of vanes and faces that extend between the upstream and downstream ends, wherein at least some of the vanes have openings that extend through the faces thereof and have angled tips.

Abstract: An airflow diffuser (diffuser fan) comprises: a blade wheel formed of blade members 30, spoke members 40 and a hub member 50; a shaft member 20 forming an axis of rotation of the blade wheel; and a suspension member 10 suspending the shaft member 20 from a ceiling surface. This airflow diffuser (diffuser fan) is located so that air blown out from the air outlets of an air conditioner comes in contact with and rotates the blade members. Also, the rotating blade members receive the blown air in succession, and by deflecting the air, diffuse the blown air throughout the entire air-conditioned space.

Abstract: A device for altering the airflow pattern from a ceiling vent diffuser. The device comprises a flexible member that is secured to a diffuser vane by a spring-biased hook and one or more tabs. A release button on the outer surface of the device is depressed to pivot the hook out of engagement with the vane. The device is complementary shaped to a region of the diffuser. When installed, the device blocks the openings in that region and substantially prevents air from flowing out of the openings. One or more devices may be installed in selected regions to block airflow from those selected regions. A plurality of devices may be utilized to completely prevent airflow from the diffuser.

Abstract: A device for altering the airflow pattern from a ceiling vent diffuser. The device comprises a flexible member that is secured to a diffuser vane by a spring-biased hook and one or more tabs. A release button on the outer surface of the device is depressed to pivot the hook out of engagement with the vane. The device is complementary shaped to a region of the diffuser. When installed, the device blocks the openings in that region and substantially prevents air from flowing out of the openings. One or more devices may be installed in selected regions to block airflow from those selected regions. A plurality of devices may be utilized to completely prevent airflow from the diffuser.

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 first duct in communication with the upper space of the case for guiding outdoor air into the case, 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, and a guide member provided to the outlet for guiding the air discharged into the room space toward a desired direction, thereby providing a ventilating system having an air purifying function, and preventing the air discharged into the room space from being directed to one side of the room.

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: The invention teaches and shows systems, devices and methods for controlling the automation of ventilation registers. In one embodiment, the invention is a system for articulating a register for a heating or air-conditioning system. The system generally includes a local power source, a means for receiving a wireless signal, a means for switching a drive means on, a drive means, and a movable member.

Abstract: A ceiling vent assembly for providing a cover for bathroom exhausts fans. The ceiling vent assembly includes a ceiling vent assembly and a vent cover assembly which includes a support frame being securely and conventionally attached to the ceiling and being disposed about the vent; and also includes a cover frame being hingedly and securely attached with hinges to the support frame; and further includes a sheet of transparent material being securely and conventionally attached to the cover frame and being closeable over the vent; and also includes fasteners for removably attaching the cover frame to the support frame and closing the sheet of transparent material over the vent; and a handle assembly for opening and closing the sheet of material over the vent.

Abstract: An air deflector is designed for use with an air vent supported in a suspended ceiling grid. The air deflector includes a deflector body with four side members, each having a pair of opposed ends and a mid-portion therebetween. At least two of the side members further include a support tab extending outwardly from the upper edge of the downwardly extending wall segment. The deflector body is formed from a resilient material such that the deflector may be deformed into a non-rectangular shape and the support tabs may be positioned between the upper surface of the grid members defining the rectangular opening and the lower surface of the perimeter edge of the air vent, without disassembling the deflector body or removing the air vent from the rectangular opening.

Abstract: A register containing an airflow control mechanism is disclosed whereby the control mechanism is easily accessed by a user when mounted on the ceiling of a room. The ergonomically accessible airflow control mechanism comprises a pull chain arrangement means which dangles from the register and is adaptable to any height. The pull chain arrangement is interconnected to a plurality of louvers rotatably mounted above the face plate of the register via a connecting means which transfers the vertical pulling action of a user on the pull chain arrangement to rotational movement of the louvers between an open and closed position. The connecting means as well as the rotatable louvers are mounted on the upper side of a face plate and hidden from view when in the operative position thus providing an inconspicuous, aesthetically pleasing finish to a room's decor.

Abstract: A mobile temperature controlled container having an enclosed indoor section that closes against the one wall of the container. A blower wheel compartment is contained within the housing which has a spiral-shaped lower section that communicates with an upper discharge section. A blower wheel is mounted within the lower section of the compartment and the front of the enclosure is closed by a cover. The cover contains a circular inlet opening adjacent the blower wheel and a rectangular outlet nozzle located adjacent the discharge section of the compartment. The nozzle is arranged to discharge conditioned air into the container and has a vane thereon for optimizing the discharge flow into the container.

Abstract: An airflow balancer for mounting on a ventilation outlet includes an air guider including a supporter having a bottom surface for rotatably supporting on the ventilation outlet and an airflow baffle coaxially mounted to the supporter such that the airflow baffle is suspendedly supported on the ventilation outlet. The airflow baffle has a plurality of ventilating slots for allowing an airflow passing therethrough and a rotor coaxially mounted on the air guider. The rotor is shaped and sized such that, in response to the airflow passing through the rotor, the rotor is driven to rotate, so as to drive the air guider to rotate, wherein a rotational movement of the air guider is adapted for evenly diffusing the airflow through the ventilating slots toward the ventilation outlet.

Abstract: A rotatable air vent including an outer circular housing having an inner surface and an outer surface. The outer circular housing has an interior ring rotatably coupled with the inner surface. The interior ring has a plurality of inwardly extending radial connectors secured thereto in a spaced relationship. An inner ring is disposed within the outer circular housing. The inner ring has an inner surface and an outer surface. The outer surface is secured to the radial connectors. A plurality of blades extend within the inner ring.

Abstract: A system for controlling the opening and closing of vents within a structure. The system includes a plurality of vents positioned around the structure and a control panel is centrally positioned in a readily accessible position within the structure. The vents each include a cover plate having a recess extending therethrough a plurality of louvers positioned in spaced parallel relationship within the recess and a device for automatically pivoting the plurality of louvers between an open position and closed position. The control panel includes a plurality of control buttons, each control button controlling pivoting a respective one of the plurality of louvers between the open and closed positions. A lever connects the plurality of louvers within each vent together causing the louvers to move together. The pivoting device for each vent includes first and second solenoids and a latch and spring device connected between both the first and second solenoids and the lever.

Abstract: Modular ceiling air diffusers are provided in which the core deflector elements are pre-fabricated in a one-hit one-part pressing operation to form a selected pattern of integral louvers shaped to deflect air in a desired horizontal air pattern. This reduces the labor content and material costs in manufacturing modular ceiling air diffusers compared to prior art devices of this kind, without compromising the level of air distribution performance.

Abstract: A supply air terminal device (1) of box-like or screen-like construction has a front wall (5) in which there are disposed a plurality of groups (10) of slots (7) with the groups and the slots in each group mutually spaced apart. Each group of slots is allocated a nozzle module (11) mounted on the inside of the wall (5). Each nozzle module (11) includes a number of nozzles (12) corresponding to the number of slots, wherein each nozzle functions to repeatedly deflect the part-flows (B) through an angle of 90.degree. from a delivered main flow. To this end, each nozzle (12) of a nozzle module (11) carries at its ends curved deflecting parts (12b) which project progressively further out in the direction of the main flow. The deflected part-flows mutually collide and exit with a low impulse through the slots (7) allocated to respective nozzles (12). The invention also relates to a nozzle module for a supply air terminal device (1) of the aforesaid kind.

Abstract: An air diffuser with a series of parallel blades has an air deflector structure for reducing throw and promoting better air mixing near the diffuser, having support members diverging transversely from one another laterally outwardly. Each support member has a series of vanes that diverge transversely laterally outwardly and extend through inner and outer regions adjacent or between the blades. A vane may have a forwardly extending barb having a sharp apex projecting into a recess forwardly of an outer rear edge of a forwardly adjacent vane, for biting engagement with a blade, and the same or another vane may have an undercut portion projecting outwardly rearwardly beyond an inner edge portion of a rearwardly adjacent vane, for engaging under a blade for firmly locating the deflector structure relative to the blades.

Abstract: A grille (3) for use adjacent an outlet of a heating, ventilating or air conditioning system comprising a frame (15) and a plurality of blades (25) extending between opposed frame parts. Each blade (25) has a spindle (26) which is rotatably supported within opposed slots (21) formed in the opposed parts of the frame. The slots (21) are open at one end to permit the insertion of the blade spindle and the spindle is supported at the closed ends of the slots. The grille (3) further comprises means for retaining the blade spindles (26) in the slots (21). The retaining means comprise an element (30) mountable upon the frame (15) of the grille such that part of the retaining element (30) engages the blade spindles (26) when mounted upon the frame and prevents the spindles (26) from moving out of the open ends of the slots (21).

Abstract: An impervious contour closure for preventing air flow through a swamp cooler and related methods, which can be easily and quickly utilized by a lay person having little or no technical training. Installation of the novel closure requires no alteration to the cooler itself, effectively seals against an interior and exterior building wall around the cooler against air flow through the cooler, and provides an attractive appearance. In the spring, the steps of installation can be facilely reversed to implement the cooler for use during warm and hot weather.

Abstract: An air vent for the generation of high turbulence air jets is comprised of a rotationally symmetrical casing having a flared discharge mouth. A deflector plate is mounted in the plane of the mouth to define with the mouth an annular discharge opening. An air guide is mounted within the casing that includes an annular flared deflector portion located adjacent the discharge mouth of the casing. Radially extending twist paddles or fins are mounted on the air guide to impart a twist to the air stream. The air guide is preferably adjustably mounted within the casing for movement axially thereof whereby when the deflector portion of the guide is disposed above the plane of the mouth portion a spreading of the air stream is achieved, and when the deflector is located below the plane of the mouth portion a concentration of the stream is achieved, intermediate effects being achieved at intermediate positions of the guide relative to the casing.

Abstract: In an outlet, in particular for introducing cold air into a room, having a housing (1) made of side walls (2) and a room-side cover plate (3) with outlets (4), a refrigeration assembly (11) is to be inserted in the housing (1). The refrigeration assembly (11) comprises a covering (12) with a cylinder-like air inlet (20) and a cooling unit (13). The latter is assigned at least one fan, preferably however two fans (14, 15) inside the cylindrical air guide plate (20).

Abstract: An air diffuser assembly (20) for diffusing conditioned air from an air plenum (22) between adjacent ceiling tiles (32) in a suspended ceiling (24) supported by a plurality of crossing T-shaped support bars (26, 28) comprises a plurality of longitudinally extending air diffuser blades (38) for directing the conditioned air through the diffuser assembly (20). The blades (38) include first (40) and second (42) ends interconnected by first (44) and second (46) end caps respectively and defining an air flow channel (48) therebetween. Each of the end caps (44, 46) includes an engagement flange (56) for engaging a T-shaped support bar (28) to support the diffuser assembly (20) thereon and a blockage flange (54) for engaging a like adjacent blockage flange (54) of an adjacent air diffuser (20) supported on the same T-shaped support bar (28) and creating an air barrier for covering the T-shaped support bar (28) and preventing the flow of conditioned air between the adjacent diffuser assemblies (20).