Patent ID: 7284640
Filing Date: 2007-10-23
Classification: B66B

Abstract:
1. A system of enhancing air quality used for buildings comprising a multi-level building having a hoistway vertically extending through at least two levels of the multi-level building, for receiving at least a car vertically moving therein, an exhaust outlet connected via the hoistway to a bottom level of the multi-level building, and the car having at least an air feeding device and an air extracting venting device, the system comprising: at least an air circulating device installed at a top level of the multi-level building, for introducing fresh air into the hoistway; a plurality of current directing devices installed between two different levels of the multi-level building, for directing an air current in the hoistway flowing from an upper level of the building to a lower level of the building; and an exhaust discharge device in communication with the exhaust outlet available in a basement, for discharging exhaust out of the hoistway and maintaining air in the hoistway flowing in a single direction.