Abstract: A wall mount (for example, a window mount) dual fan includes two independently controlled fans controllable to move air in the same direction or in opposite directions. Each fan includes a temperature sensor to measure temperature of air moving through each fan. The fans are energized periodically for a short time period to make accurate temperature measurements. When the combined temperature measurements indicate an advantage from fan operation, the fans are activated.

Abstract: An air filtering assembly for particulate removal includes a housing that defines an interior space. An aperture is positioned in a front of the housing and is configured to allow flow of air into the interior space. An opening is positioned in a back of the housing and is configured to allow flow of air from the interior space. A slot is positioned in a top of the housing. A filter is selectively insertable into the interior space through the slot. The filter is configured to remove particulates from the air that flows through the interior space from the front to the back.

Abstract: A tension support system for a motorized fan is provided. The tension support system includes a fan assembly disposed within a fan housing, the fan assembly including a motor configured to selectively operate the fan assembly. The tension support system further includes multiple connectors configured to secure the motor to inner walls of the fan housing such that the fan assembly is substantially supported by the inner walls.

Abstract: A ventilating fan includes a driving device, a rotating blade assembly, and a frame structure. The driving device drives the rotating blade assembly to rotate. The rotating blade assembly includes a hub and at least one blade group arranged on the periphery of the hub. The driving device and the rotating blade assembly are disposed in the frame structure. The frame structure includes a main body and a first mounting plate. The main body is formed by a plurality of side portions, and each side portion has at least one bending part for connecting to the adjacent side portion. At least one of the side portions has a first slot, which is disposed adjacent to the corresponding bend part. The first mounting plate is disposed corresponding to the first slot and located in the main body, and the first mounting plate has at least one fixing portion.

Abstract: The present invention relates to an exterior sealed window-mounted fan. The fan is designed to be able to fully seal the intake and exhaust air chambers when the system is not in use. The present invention includes a dual panel frame that can completely seal the exterior portion of the opening from the interior portion. The invention can be left in a window all year long if so desired, and the invention can be sealed close during bad weather or opened during desired weather. Along the top surface of the invention is a grooved notch for stabilizing the unit in place with respect to the window and window frame. The invention includes a plurality of electrical fans. The invention includes a pair of adjustable louvers in for the invention to be used with a plurality of window openings. A system of exterior sliding vents seal the exterior of the dwelling from the interior, and is manually operated by a vent control.

Abstract: An air circulator unit with adjustable size is provided including a housing situated within a window frame. The housing includes a pair of halves each defining an interior space, an open front face and an open rear face. The housing further includes a length adjuster having a pair of ends coupled between the halves of the housing with a plurality of bellows formed therebetween for allowing the movement of the halves along a single axis. At least one fan unit is mounted within the interior space of each of the halves for directing air between the open faces of the housing.

Abstract: A window fan capable of permitting the flow of air in one of at least three different patterns, including intake, exhaust and a simultaneous exchange of air. The fan includes a housing, having front section including a forward inner wall, and a back section having a rearward outer wall. The housing further includes a pair of opposed projecting side walls having an elongated opening. Positioned within the elongated opening within the side walls are a pair of side panel assemblies comprised of expandable, accordion-style side panels secured within a side panel frame. Directional air flow through the housing is effectuated through the use of at least one impeller having a plurality of blades, located within the housing, in combination with a pair of rotatable C-shaped ducts.

Abstract: A portable window fan including a housing having a bottom wall for mounting on a sill of a window with an open sash, a top wall for engaging the open sash, a rear wall defining a plurality of inlet openings, and a front wall defining three substantially aligned discharge openings spaced apart in a given direction substantially parallel to the top wall. Also included are three fan blades mounted within the housing, each fan blade arranged to produce air flow through a different one of the discharge openings; an electrical drive coupled to the fan blades and operative to induce rotation thereof; and a grill mechanism covering the discharge openings.

Abstract: A window mounted oscillating fan. The fan has two blower modules each having a motor, fan blade, and diffuser. The diffuser is fixed in a stationary position relative to its fan blade. The window fan oscillates by pivoting all blower modules simultaneously through a single motorized oscillation mechanism. The blower units may be arranged to discharge air in parallel, or alternatively, in different directions. The blower units pivot about an axis inclined from the vertical, so that oscillation has a vertical component as well as horizontal. In different embodiments, the fans operate in tandem, facing the same direction at all times, or oscillate in different directions, thereby diffusing incoming air. The window fan has an air filter, and manual and automatic controls including a touch sensitive on-off switch, a thermostatic on-off switch, and a speed selector.

Abstract: A portable electric fan including a housing adapted for substantially covering a window opening, an enclosure movably mounted on the housing and defining an intake opening and a discharge opening, an enclosure drive coupled to the enclosure and operable to produce movement thereof on the housing, a movable blade mechanism retained in the enclosure and operable to produce air flow between the intake and discharge openings and a blade drive coupled to the blade mechanism and operable to produce movement thereof.

Abstract: A window fan having a housing with a bottom wall for mounting on a sill of a window opening, a front wall defining an air outlet, a rear wall defining an air inlet, a first side wall joined to the front wall and the rear wall, a second side wall joined to the front wall and the rear wall; and the first side wall defining an elongated opening extending between opposite ends thereof; a blower retained by the housing and activatable to produce air flow between the air inlet and the air outlet; a partition biased into a recessed position within the housing and movable through the elongated opening into a projecting position extending between the first end wall and one side of the window opening; and a latch for retaining the wall in its projecting position.

Abstract: A window fan which can be mounted in a window opening in either a double-hung window frame or a vertical slider window frame and which can be held securely in place without the use of additional hardware or mounting brackets. The window fan comprises a housing of generally rectangular shape, the housing including a front piece, a back piece, and a pair of side extensions. The side extensions have outer edges sized and shaped to fit within the left and right side railings of a double-hung window or the top and bottom railings of a vertical slider window. Each one of the side extensions includes a pair of outer guides and a plurality of panels telescopically mounted within the outer guides. The side extensions extend out from the sides of the housing at about the rear edge so as to permit installation in windows having outer screens.

Abstract: A window fan which can be mounted in a window opening in either a double-hung window frame or a vertical slider window frame and which can be held securely in place without the use of additional hardware or mounting brackets. The window fan comprises a housing of generally rectangular shape, the housing including a front piece, a back piece, and a pair of side extensions. The side extensions have outer edges sized and shaped to fit within the left and right side railings of a double-hung window or the top and bottom railings of a vertical slider window. Each one of the side extensions includes a pair of outer guides and a plurality of panels telescopically mounted within the outer guides. The side extensions extend out from the sides of the housing at about the rear edge so as to permit installation in windows having outer screens.

Abstract: An electric fan assembly for household use convertible between use in a window and use on a desk or floor has a substantially rectangular, one-piece, molded polypropylene support member formed from a first support panel, a second support panel, and a pair of living hinges connecting the first and second panels to one another along a pivot axis perpendicular to the top and bottom edges of the support member. The first support panel is constructed to provide a mounting for an electric fan motor, a venturi ring assembly including an intake grill, and an exhaust grill. In use, the two support panels may lie flat for use in a window or may be pivoted about the axis of the living hinges for use on a deck or floor. Extenders are provided for extending the effective width of said fan assembly for use in relatively wide windows and includes secondary extender plates connected to the extenders by lost motion for increasing the length of extension obtainable. The exhaust grill is optionally mounted for rotation.