TOXIC AIR DECONTAMINATING DEVICE Russian patent published in 2000 - IPC

FIELD: adsorption engineering; decontaminating atmosphere in civil-defense protective works. SUBSTANCE: device has two absorbing filters installed in parallel with overshoot warning unit connected to delivery air conduit and fan at outlet. It also has set of four sealed valves one installed at inlet and other at outlet of each absorbing filter. Detector and ejector are mounted in tandem on delivery air conduit upstream of sealed valves; low-pressure chamber of ejector communicates with suction line of fan by means of newly introduced bypass air conduit through additional series-connected heat exchanger and safety chamber incorporating heating element and provided in addition with inlet and outlet sealed valves. Outlet of each absorbing filter directly communicates with inlet of other absorbing filter via additional sections of air conduits incorporating sealed valves. In addition, ejector inlet at delivery air conduit communicates through sealed valve with inlet of injector low-pressure chamber; valve intended to pass air from protective works is installed directly at outlet of safety chamber. EFFECT: improved economic efficiency due to saving adsorbent. 1 dwg