Patent ID: 7001265

Claim:
An air exhaust system for dissipating heat from a chamber through the use of the normal upward flow of heated air comprising, in combination: a building with a plurality of chambers, each chamber having air adapted to be withdrawn for cooling purposes, each chamber having side walls and a ceiling with a common attic and roof there above, the ceiling being formed with a plurality of air flow apertures, one in each chamber and the roof formed with a single air flow aperture; a plurality of tubular air ducts, each duct having a lower end open to an associated chamber through an aperture in the ceiling, each air duct having an upper end extending through the attic and opening to the atmosphere through the aperture in the roof, one of the ducts terminating at an intermediate location of the other duct; a turbine fan operatively coupled with respect to each upper end of the ducts and rotatable about a vertical axis, the turbine fan adapted to be self rotated in response to the movement of the air there through as the air moves from a heated location in the chambers, through the ducts to a cooler location above the turbine fan; at least one air filter, the air filter being located in proximity to the ceiling beneath the lower end of a duct for entrapping particulate matter from air passing there through; at least one damper being housed within a duct, with the damper being located above a filter and the damper being moveable between a closed orientation to preclude the flow of air through the duct and an open orientation perpendicular to the filter and the air flow to allow the flow of air through a filter and duct, the damper having an associated electrical switch at an operator's control for changing the orientation of the dampers, the switches being at a remote location from the damper on the wall of its associated chamber; and a reversible ceiling fan depending from the ceiling of at least one of the chambers immediately beneath a filter and the lower end of a duct, the ceiling fan having a remote switch to turn on and off the ceiling fan and to reverse the fans's direction of rotation.