FILTER-VENTILATION UNIT Russian patent published in 2024 - IPC B01D46/62 F24F8/95 A62B29/00 

FIELD: ventilation and air conditioning.

SUBSTANCE: invention is intended to provide air supply and create excess pressure in inhabited premises of objects in contaminated with toxic substances, radioactive dust, bacterial mixtures and potent toxic substances in the atmosphere. Invention relates to means of collective protection of people. Filter ventilation unit comprises a device for preliminary cleaning from coarse dust, an air flow stimulator—a fan, pre-filter and absorber filter for air cleaning from radioactive, bacterial, poisonous substances and potent toxic substances, flow-through metal housing in the form of a cylindrical hollow cylinder filled with compressed air, on its outer surface there is a sealing rubber pneumatic chamber, to the outer end of the flow-through metal housing a blockage elimination unit is attached, to the inner end of the flow-through metal housing a control unit is attached, in the flow cavity of the metal housing there is a pre-filter, a reversible fan with a function to change the direction of rotation, an absorbing filter and a flow fan. Blockage elimination unit consists of a ring, a metal mesh, a round-shaped cover with rigidly attached guides, note here that said metal screen is arranged between clogging elimination ring and round-shaped cover. In addition, there is a solenoid, which is fixed in the center of the ring of the blockage elimination unit by means of two attachment rods, solenoid rod is attached to the round shape cover and is equipped with a return spring, in the ring there are four holes in the axial direction for the round shape cover guides movement, inside the ring there are additionally four slots, in the first slot there is an infrared light-emitting diode and an infrared photodiode, in the second, third and fourth slots there are mirrors. Control unit consists of a switch-on button, an accumulator battery, an electromagnetic valve, a flow sensor, is supplemented with an electric unit consisting of a signal amplifier, a timer, relay for switching on the breaker, the breaker and the polarity change relay of the reversible fan.

EFFECT: improved operational characteristics of the collective protection means due to the use of two fans, the rapid obturation of the filter ventilation unit in the plenum ventilation, creating excess pressure in habitable premises of objects, cleaning flowing air from hazardous substances (poisonous substances, radioactive dust, bacterial mixtures, potent toxic substances), automatic elimination of clogging of internal elements of filtration unit.

1 cl, 8 dwg