DEVICE FOR PRESERVATION AND CLEANING OF CONTAMINATED AIR Russian patent published in 2003 - IPC

FIELD: devices for cleaning and preservation of air in airtight rooms. SUBSTANCE: device has fan whose inlet and outlet are connected to protected room by air ducts with control valves, air cleaning unit, foam generator provided with source of foaming fluid, foam destructor with separator installed between protected room and air cleaning unit. Suction air duct between fan and air cleaning unit is communicated with upper zone of protected room by section of air duct with control valves. Suction air duct between foam destructor and air cleaning unit is connected with upper zone of protected room and inflatable shell by means of air ducts with control valves. Inflatable shell by means of air ducts with control valves. Inflatable shell is located in upper zone of room adjacent to protected room and serving as way for people evacuation in case of fire. Inflatable shell is separated underneath from room remaining part and way of evacuation by suspended perforated ceiling. Offered device provides for ways of people evacuation from smoked up rooms. EFFECT: higher efficiency of use. 2 dwg