Patent ID: 7354473
Filing Date: 2008-04-08
Classification: F24F,Y02B,Y10S

Abstract:
1. A method for economically controlling air purity within a protected space, said method comprising providing a combined building air-conditioning unit and a NBC protection system having an enclosed space housing a building air-conditioning unit and further including a plurality of chambers; a first chamber having an ambient air inlet port, at least one prefilter and a blower; a second chamber having valve means receiving air from said blower and accommodating a C-detector and a valve means actuator responsive to, and at least indirectly, operable by said C-detector, and a third chamber housing at least one C-filter and a blower, said second chamber and said third chamber sharing at least a portion of a common wall; sucking ambient air into said first chamber by said blower and activating said C-detector, and causing the valve means of said second chamber to close and activate said C-filters and blowers upon detecting C-contamination by said C-detector.