Abstract: An air diffuser for use at a ventilation outlet of an HVAC system. The air diffuser comprises a base platform having an opening plenum formed from injection-molded plastic, the base platform including a collar for attachment to the outlet, the plenum defined by a perimeter rim, the edges of the rim lying substantially within a first common plane, at least one first diffuser plate positioned over the plenum, the first diffuser plate formed from injection-molded plastic and having edges lying substantially within a second common plane, and a plurality of stems integrally molded with one or more of the first diffuser plate and the base, the stems configured to secure the first diffuser plate to the base platform, each of the stems having a first end sized to fit within a complimentary female receptacle formed in one of the first diffuser plate and the base platform, the stems being formed via injection molding with one of the first diffuser plate and the base platform.

Abstract: An air blowing device adapted to be used in such a manner that at least two of the devices are horizontally and/or vertically aligned with each other, thereby to obtain a uniform flow of air in the downstream direction from device to device. An air-permeable front surface (11f) is formed to the blowing device (1) at the downstream side of a rectifier mechanism, and side surface sections (11a) which extend in the upstream direction of the device (1) are formed at both edges of the air-permeable front surface (11f). First ventilation holes (70a) are distributed at the air-permeable front surface (11f), and second ventilation holes (70b) are distributed at the side surface sections (11a).

Abstract: An evaporative cooler regulation system and method provides adaptable connectors and directional dispersion components that couple to an evaporative cooler and tubes for distribution and directional dispersion of a fluid, such as evaporated air. The evaporative cooler system also provides at least one aperture that facilitates external access to the controls of the evaporative cooler. In this manner, the evaporative cooler and the resultant fluid may be regulated externally. The fluid is further regulated by expanding and interchanging the number of distribution tubes that carry the fluid. A hood attaches to the evaporative cooler, forming a seal. The hood comprises apertures for accessing controls and also for dispersing the fluid. A tube coupler joins the hood and a tube. The tube disperses the fluid through an attached dispersion grill. The dispersion grill pivots to directionally disperse the fluid. A series of tubes extend the range of the system.

Abstract: 3-Cone Diffuser including a central cone (1), an intermediate cone (2) and outer cone or outer frame (3) placed one above the other in a spaced apart relationships having same vertical axis (14). The central cone (1) at the back is provided with bracket (8) spot welded or brazed or rivetted directly or via an intermediate plate to the central cone to hold the centre cone which is fixed on the intermediate cone with the central opening (15) having outwardly projected flanges (16) having holes (17) to accommodate the front (18) and back (19) support of the bracket. The back support is provided with springs (9) for easy removal of the bracket, thereby enabling dismantling the central cone easily.

Abstract: The present invention provides a vehicle ventilation system, and, in particular, a heating and air-conditioning assembly and method of making such an assembly, wherein the assembly comprises a multi-portion HVAC housing and an alignment feature. The alignment feature preferably follows the contours of the housing portions of the HVAC. Preferably, the alignment feature is a baffle, or, in particular, a cross flow baffle, that serves an air directing as well as bridge function between housing portions of the HVAC, reducing packaging space for the HVAC unit while providing ease of assembly and reduced tool complexity for multi-piece HVAC housings.

Abstract: Diffuser for central air conditioning system includes a single continuous piece center core for cooperating with an intermediate core and an outer frame, the center core including an outwardly and downwardly directed slanting surface generally originating from a center apex and terminating at an edge at its bottom periphery. A pair of opposed vertical strips are attached at the back upper side of the slanting surface in spaced apart relationship and opposing each other, and opposing holes or openings are provided in each vertical strips. An intermediate core made in a single continuous piece is disclosed and includes a vertical collar at its top, and an outwardly and downwardly directed slanting surface at a terminal edge area. An outer frame element made in a single piece includes an upper collar with holes and a downward slanting wall terminating at a flange. A rod/pipe connector extending through the holes retains the assembly together in nested relationship.

Abstract: A fluid valve comprises a fluid conduit and a flow reducing device. The fluid conduit includes a fluid input end and a fluid output end. The flow reducing device comprises a first fluid passage and is configured to adjust the width of the first fluid passage. The first fluid passage has a narrow width over an extended flow distance that is delimited by internal walls that cause a pressure gradient in fluid passing through the first fluid passage. The flow reducing device further comprises a second fluid passage having a narrow width over an extended flow distance that is delimited by internal walls. The first fluid passage and the second fluid passage are parallel to each other. The flow reducing device further comprises a plurality of damping elements having surface portions parallel to each other. The facing surface portions of adjacent pairs of said damping elements define the internal walls delimiting the first and second fluid passages.

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 diffuser for a ceiling allows a ceiling fan to be mounted directly below the diffuser so that the fan may distribute the air being delivered out of the diffuser. The diffuser includes an upper box section mounted on a lower section that mounts the diffuser on the ceiling. The down rod of the ceiling fan is connected to the diffuser to support the ceiling fan. The down rod may be supported above the upper section so that the electrical connections between the ceiling fan and an electrical source may be positioned outside of the diffuser.

Abstract: Devices, methods of using the devices, and kits are described that provide a protective barrier device between an air delivery structure of an air conditioning unit and the ceiling components that are adjacent to the air delivery structure. The device is a unitary water-impermeable structure having surfaces that act as barrier, preventing condensation collecting on the air delivery structure from passing to the sorrounding ceiling components. A preferred embodiment of the invention has a surface projecting into the space being cooled, said surface deflecting air from the adjacent ceiling structures, thereby reducing or preventing collection of dirt or other particles, or moisture, from depositing on the adjacent ceiling components.

Abstract: Devices, methods of using the devices, and kits are described that provide a protective barrier device between an air delivery structure of an air conditioning unit and the ceiling components that are adjacent to the air delivery structure. The device is a unitary water-impermeable structure having surfaces that act as barriers, preventing condensation collecting on the air delivery structure from passing to the surrounding ceiling components. A preferred embodiment of the invention has a surface projecting into the space being cooled, said surface deflecting air from the adjacent ceiling structures, thereby reducing or preventing collection of dirt or other particles, or moisture, from depositing on the adjacent ceiling components.

Abstract: A wind outlet plate of an air conditioner for cleaning air comprises a wind outlet panel, an upper cover, a wind guiding plate, a filter, a negative ion generator, an ultraviolet lamp. The wind outlet panel has a wind outlet. The upper cover is installed above the wind outlet panel and has respective wind inlet and wind outlet. The wind guiding plate is installed below the wind outlet panel for guiding air flow. The filter is installed on the wind guiding plate for filtering dust, and at least one rotary groove is installed at the lateral side thereof, by rotation, the rotary groove is buckled to the rotary hook at the wind inlet of the upper cover for engagement or detachment. A negative ion generator is installed at the bottom of the upper cover near the wind inlet; and an ultraviolet (UV) lamp is installed at the bottom of the upper cover near the wind inlet.

Abstract: Disclosed is a ceiling grille for an air conditioner of a recreational vehicle. A center grille part is disposed on a lower surface of the ceiling grille for discharging cooled air in a vertical downward direction. The center grille part has a first center opening. A closure member is arranged above the center grille part for opening and closing the center grille part while being moved up and down. The closure member has a second center opening aligned with the first center opening and a cam part placed around the second center opening. A guide section guides upward and downward movements of the closure member. A spring is intervened between the center grille part and the closure member for biasing upward the closure member. A knob is rotatably fitted into the first and second center openings. A cap member is coupled to the knob to be integrally rotated therewith.

Abstract: An opening/closing apparatus of a damper for adjusting a blowing amount of air out of an air diffuser comprises a case mounted at the center of the diffuser in a predetermined size and shape and having an indicating scale portion to be properly positioned at the front surface thereof; a rotating shaft passed through the center portion of the case and extended in a predetermined length out of the case; a rotating manipulation portion including a knob integrally fixed to one end of the rotating shaft; and an indicating operation portion cooperated with the rotating manipulation portion to enable an indicator to direct the indicating scale, thereby confirming the exact opening or closing degree of the damper.

Abstract: In building environmental control, primary HVAC services are distributed to multiple terminal units. An active diffuser terminal unit has a variable speed fan to controllably draw room air into the unit for reheating the air; and, conversely, to force conditioned air down into the space for cooling by reversing the direction of the fan motor. Variation of the fan speed serves to modulate the airflow direction mix through a combination of a vertical port and a horizontal port. This closed system avoids filtering plenum air, and reduces cost by supporting both heating and cooling services with a single fan.

Abstract: A system for distributing air through an opening in a ceiling into a room, the ceiling being supported by spaced apart joists or other ceiling structural members, the air being supplied by a duct located above the ceiling, including a plenum having an open top connected to the duct and an open bottom in communication with the ceiling opening. A support bar extends through the plenum and secured at its opposed ends to ceiling structural member. A motor hanger is secured to the support bar. An air diffuser is positioned in communication with the plenum open bottom. A fan motor is supported to the lower end of the motor hanger. A plurality of generally horizontally extending fan blades are attached to and rotated by the motor. Air is passed from the duct through the plenum and diffuser into the room, distribution of the air being augmented by the fan blades as rotated by the motor.

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: The air diffuser of this assembly has a top collar with a free edge and the damper is of conventional construction, having a central core and a set of radially outwardly extending strut arms. In the central core is mounted a vertical actuating screw for adjusting the air deflector blades of the damper. The outer ends of the strut arms are formed with a stop member resting over the top edge of the diffuser collar and with a system to deform the collar walls so as to lock the strut arms to the collar against axial movement and against rotation. The stops serve to locate the damper in its proper operative position so as to direct the air uniformly over the air diffuser baffles.

Abstract: A condensation preventing vent structure has therein at least one blade including an innermost vent to define a passage for a flow of air. The innermost fin is provided with open upper and lower ends to define therein an inner air flow passage. An air flow damper is provided above or in the innermost fin to restrict the air flow in the central portion of the flow passage.

Abstract: An air duct diffuser is shown for attachment to a ceiling grid. The diffuser includes a frame which mounts to the ceiling grid and a louvre which mounts to the frame for directing diffused air within an associated air space. A pre-formed, composite housing of insulating material mounts to the frame and has punch-out duct openings of varying sizes provided therein.

Abstract: An airhouse for supplying conditioned air to the interior area of an enclosed building. The airhouse incorporates one or more blowers having variable speed controllers enabling them to be operated at variable volumetric flow rates. The airhouse housing includes variable area dampers for controlling the inlet of outside or building return air. A dedicated controller is provided for adjusting the inlet areas of the two inlet pathways to provide a constant flow velocity through a direct fire burner through a range of blower volumetric output settings. In addition the units may include variable area diffuser units which tend to maintain constant discharge velocity pressure at various blower volumetric flow rate settings. In addition various control and operating strategies are provided for the individual airhouse units and a distributed array of such units in a large building structure controlled by a central computer.

Abstract: A suspended ceiling fan assembly comprising: a housing having a central section in a generally dome-shaped configuration with a first axis and with an external periphery formed as a square, the periphery including a wall extending from the periphery of the dome-shaped component and, at its end, inturned ledges in a rectangular configuration, the ledges adapted to be supported upon the periphery opening; a fan supported by the center of the housing and extending therefrom, the fan having a motor with a circular cross-section about an axis of rotation coincident with the axis of the housing, the fan including a plurality of blades secured to the motor for rotation in a plane about the axis of rotation of the motor; and a plurality of louvers to spread out air forced outwardly by the rotation of the fan blades.

Abstract: At an outlet of a heating, ventilating or air conditioning system air passes from the ducting through a plenum chamber, a damper provided with a set of blades which are movable between open and closed positions and a diffuser which directs the air in a desired direction. The plenum chamber is provided with internal vanes which act to guide a flow of air through the chamber between its inlet and outlet. The damper defines a plurality of predetermined blade positions between the open and closed positions and a resilient finger and teeth for retaining the blades in a selected one of said predetermined positions. The damper has a frame comprising a plurality of discrete frame elements interconnected at each corner joint of the frame by a friction fit pin passing through interdigitated projections on the frame elements.

Abstract: A ventilator for ceilings, walls or floors comprises two principal integers, an outlet means and a ventilation tube connector. These integers may be connected by screw-thread means which is operable from outside the ventilator either manually or by means of a special tool.

Abstract: An air guard assembly used to direct air forced through an overhead air diffuser toward the floor of a building. The assembly has a plurality of elongated linear baffles. Each baffle has a strip of magnetic material that adheres directly to metal ceiling structures to surround and enclose the diffuser within the assembly. A gripping tool having an elongated handle is used to locate the baffle adjacent the metal ceiling surface and remove the baffle therefrom. The baffle has a pair of grooves preventing the gripping tool from slipping off the baffle.

Abstract: A diffuser assembly for an air-conditioning installation, has low thermal conductivity so that it can prevent from accumulating condensation and is incombustible enough. Each of the diffuser elements of the diffuser assembly contains 90% by weight or more of an inorganic fiber material or an inorganic material composed mainly of inorganic fibers and obtained by molding and curing with the use of a binder. The inorganic fibers used are preferably ceramic or polycrystalline mullite fibers.

Abstract: A safety spring lock for locking an air pattern control in a diffuser includes a normally bowed strip carrying a retainer clip. The strip is flattened to engage the clip with a fixed part of the diffuser, the clip engages the diffuser and that engagement and the inherent bias of strip hold the spring lock in place in the diffuser. The safety lock includes a U-shaped portion spaced from the retainer clip and connected to the retainer carrying portion by a normally bowed strip which is flexed to a flattened position to locate the U-shaped portion adjacent to portion of the movable air pattern conrol when it part of the diffuser. The U-shaped portion is urged into engagement with a portion of the air pattern control to prevent movement thereof in the diffuser which would otherwise be sufficient to remove the air pattern control from the diffuser.

Abstract: An air diffuser assembly having multiple, various size inlet collars joined together with frustum shaped sections. Each of these sections contain a tear-away band around its perimeter which allows removal of unneeded collar sections. The assembly is mounted using a number of quick mounting clips.