Abstract: A mechanism for opening and closing a damper valve of a diffuser mechanism is provided. Embodiments of the invention include a damper construction that selectively alters the amount of air flow through a diffuser grille using a three-plate damper valve. The three-plate damper valve includes a manual plate, a fixed plate, and a motorized plate. The manual plate is manually rotatable around a central axis, while the motorized plate is mechanically rotatable about the same axis. The motorized plate is mechanically and/or remotely controlled using a stepper motor coupled to the motorized plate. Further, the diffuser mechanism includes a sensor for determining the location of the motorized plate with respect to a starting position. As such, multiple configurations of the manual plate and the motorized plate may be used to alter the air flow through the resulting channels of the damper mechanism.

Abstract: An air conditioner includes a heat exchanger for exchanging heat with air brought into a housing, and a blower fan for blowing air that has exchanged heat with the heat exchanger out of the housing, and controls a guide unit that opens or closes part of an outlet provided in the housing to blow out various flows of air.

Abstract: A mechanism for opening and closing a damper valve of a diffuser mechanism is provided. Embodiments of the invention include a damper construction that selectively alters the amount of air flow through a diffuser grille using a three-plate damper valve. The three-plate damper valve includes a manual plate, a fixed plate, and a motorized plate. The manual plate is manually rotatable around a central axis, while the motorized plate is mechanically rotatable about the same axis. The motorized plate is mechanically and/or remotely controlled using a stepper motor coupled to the motorized plate. Further, the diffuser mechanism includes a sensor for determining the location of the motorized plate with respect to a starting position. As such, multiple configurations of the manual plate and the motorized plate may be used to alter the air flow through the resulting channels of the damper mechanism.

Abstract: The invention relates to a wall sleeve with a ventilation opening at a guide tube (2), and a cover plate (5), which is mounted at the end of the guide tube and can be moved between a closing position and an open position, said cover plate (5) automatically opening and closing against a reset force, propelled by the pressure difference between the air pressure in the guide tube (2) and the external ambient air.

Abstract: The air intake apparatus provides for additional auxiliary air to a wood or pellet burning stove. The apparatus is provided in more than one embodiment for fit to more than one type of stove. The curved T-handle controls the damper sleeve for dampened control of the auxiliary air.

Abstract: A foundation vent comprising a front frame and resiliently-flexible clips with tabs at their ends. The foundation vent can be quickly installed within a foundation opening by flexing the clips, placing them into the opening, and pushing the front frame until it seats against the exterior of a foundation wall. At this point, the tabs of the clips will have protruded past the interior face of the foundation wall allowing the clips to return to their unflexed state and causing the tabs to secure against the interior face of the foundation wall.

Abstract: A cold air supply and control device for a refrigerator is provided. The cold air supply and control device includes a cylindrical, duct main body having an inlet that allows cold air generated in a heat exchange chamber to be introduced thereinto and an outlet that supplies the cold air introduced through the inlet to a refrigerating chamber. The duct main body is pivotably installed to at least one of both side surfaces of the refrigerating chamber. An opening and closing piece is fixed to the side surface of the refrigerating chamber and selectively opens and closes the outlet according to a rotation of the duct main body. An interlocking plate formed below the outlet of the duct main body rotates the duct main body by a load of a shelf so as to open the outlet. In addition, a torsion spring is installed between a surface of the refrigerating chamber and a front or rear surface of the duct main body, and elastically supports the duct main body in a direction in which the outlet is closed.

Abstract: A trickle vent such as might be used in association with commercial windows is formed from PVC tubing in two convoluted paths. One or more expansion chambers are provided at turns or directional changes within the tubing which reduce or eliminate noise transmission through the vent. Where a plurality of expansion chambers are used, each chamber may be of different length to dampen a different portion of the acoustic spectrum. In a preferred embodiment, the expansion chambers are filled with an acoustic-type foam, and the ends are not completely sealed. The tubing preferably bridges two extrusions that form a supporting housing for the vent, and by using two separate extrusions bridged by the tubing, both thermal and acoustic isolation are maintained.

Abstract: A metal vent having an aperture for the passage of a fluid, a porous membrane sealing the aperture, wherein the components of the vent are assembled by an interference fit.

Abstract: An under-floor, perimeter-based heating ventilation and air conditioning pressurized air delivery system for use in a space includes a ventilation module, to be located in the floor, a multi-deflection linear bar grille covering the ventilation module, for diffusing the air entering the space, and a pair of apertured plates located below the grille, one plate moves relative to the other to either block more of the resultant apertures, so less air will flow, or to align the apertures, so more air will flow, all at nearly constant velocity and resultant plumage; nuances in aperture size or location allow one segment of the module to engage air flow on a lead-lag basis with respect to the other segments; air flow from the lead apertures induces air flow through a proximate under-floor heating module, to both increase its heat output and temper the ventilation air.

Abstract: A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to generate a second input signal indicative of a desired airflow to the second zone. First and second flow regulators are configured to regulate airflow to the first and second zones, respectively, such that the first and second regulators selectively provide the airflow to each of the first and second zones based on the first and second input signals. A single actuator is associated with the first and second flow regulators. The actuator is operable to simultaneously actuate the first and second flow regulators based on an input from the first and second input devices to allow the desired airflows to the first and the second zones.

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 a lock structure for locking the support in the housing by rotating the support around a central axis of the support is formed in the insertion portion.

Abstract: A dust and debris disposal system has a floor-mounted housing adapted to be mounted over an opening formed in a floor for receiving debris particles swept thereto, and a set of dust loosening ribs fixed to an projecting forwardly from a posterior portion of the housing. The invention is improved wherein the dust loosening ribs are moveably mounted on the housing. In one embodiment, the dust loosening ribs and a decorative cover are pivotally attached to the housing by means of a hinge. In another embodiment a rib insert is supported by as ledge structure on the housing and may be snap fit relative to the housing.

Abstract: A multi-layer barrier for insulation blocking an opening or passage of a building and for providing ventilation to or within a building. A plurality of inflated hollow membrane cube-like structures are formed adjacent to one another, which traverse a longitudinal width of the opening or passage. The hollow membrane cube-like structures are formed from generally rectangular sheets having two long parallel edges, two parallel short edges and a floor having one or more orifices in the forming floor of each non-bottom sheet between membranes, for air connection between membrane structures to be changed from an inflated and a deflated state.

Abstract: An improved foundation vent with increased net free area is provided. The foundation vent has a frame that surrounds and defines an opening and a grill supported by the frame and spanning the opening. The grill has an inside face disposed on the inside of a crawlspace when the vent is mounted in a foundation wall and an outside face disposed on the outside of the crawlspace. A mesh screen is mounted to the frame and spans the opening adjacent the inside face of the grill. The grill is provided with projecting standoffs that support the screen at a predetermined distance from the inside face of the grill to form a plenum between the screen and the grill. A raised peripheral rim is provided on the frame and supports the peripheral portion of the screen. The spacing of the screen from the inside face of the grill and the plenum formed thereby unblocks the portions of the screen that otherwise would be blocked by the members of the grill and thus increases the net free area of the foundation vent.

Abstract: A method and apparatus for controlling temperature and ventilation in an animal confinement building comprising a series of semi-rigid panels that are suspended in cascading arrangement along a flexible cable. The cable is connected to a mechanism for extending and retracting the cable so as to cause the panels to be lowered to open the aperture or raised to close the aperture according to sensed temperature and pressure conditions within the animal confinement building.

Abstract: A combustion air kit for providing a source of external air to feed a fire in a firebox is installed during new construction or as a retrofit unit into existing fireplaces. A masonry air vent brick having a hole therein air flow is included in the combustion air kit. The flow of air through the brick and to the firebox is regulated by a spinner cap mounted for rotation on a threaded post seated within a plug contained in the air vent brick. The air vent brick is connected to a flexible duct which is attached at an opposite end to a vent inlet brick located on the external of the house, chimney or other structure. The vent inlet also includes a vent inlet cover to provide an attractive inlet for the air to the firebox.

Abstract: A slot ventilator has first and second base portions which in use are secured to a facia, for example a window frame, one at each end of an elongate opening therein. An elongate body portion is secured to the base portions by respective first and second pivoting parallel motion links. The body has a handle whereby it may be moved between an open position, and a closed position in which the aperture is sealed by sealing flanges which extend out below the body.

Abstract: A flexible, insertable vent cover is formed from a flexible, resilient material. The cover has a through passageway; a gas-permeable, liquid-impermeable membrane traversing the passageway; a diaphragm valve covering the membrane; and an annular securing ring that maintains the valve in a protective position with respect to the membrane in order to protect the membrane from immersion in or impingement by liquid.

Abstract: A ventilation device is provided for location at the outer edge of a window frame and comprises side members defining inlet and outlet portions. The members provide opposing sockets to receive plates completing a closed duct in the device for air flow, the width of this device being varied by providing plates of different width. The ends of the duct include closure assemblies, and the side members preferably comprise exactly similar structures. Weather members are fitted to the side members by releasable fastening means. In an alternative embodiment, the side members are dissimilar, one integrally carrying the plates while the other includes the socket for the plates.

Abstract: A compartment ventilating apparatus prevents its indoor louver (22) from being subjected to the formation of dew, and, therefore can prevent the dew built up in its ventilation area in the form of ice, which enables the apparatus to keep a sufficient ventilation area in operation. In the apparatus, an opening portion (3 ) passes through a side wall (2) of a compartment (1). Mounted in the opening portion, (3) are an inner ventilation unit (4) and an outer ventilation unit (5) which is spaced apart from the inner ventilation unit (4).

Abstract: The invention relates to an arrangement for controlling the flow of gaseous and liquid media, particularly air, comprising of a housing, a number of movable closing members shutting off in closed position the internal cross-sectional area of said housing and an actuating mechanism connected to said movable closing members.

Abstract: A slot ventilator (1) comprises an elongate facing strip (7) which is movable on parallel-motion links (12) between a closed position in which it seals a slot (4) in a backing member (3), and a forward, open position. The parallel-motion links (12) are pivotally secured at one end of a rearwardly-extending rib (8) at the rear of the facing strip (7), and at the other end to a pair of parallel rearwardly-extending mounting flanges (5) behind the backing member (3). When the facing strip (7) is in the closed position, the pivotal connection (13) between the link (12) and the flanges (5) is accommodated within a cutout portion (18) of the rib (8), so enabling the overall depth of the ventilator to be reduced.