ISOLATING-FILTERING BREATHING APPARATUS Russian patent published in 2025 - IPC A62B7/08 A62B7/10 

FIELD: medicine; hygiene.

SUBSTANCE: invention relates to personal respiratory protection means intended for use in an emergency situation and in an unbreathable atmosphere. Isolating-filtering breathing apparatus contains a filtering-absorbing system (FAS) placed in the case body, which includes two filtering-absorbing boxes with a sorbent-catalyst and an anti-aerosol filter, wherein the FAS is connected by means of an operation mode switch, consisting of a lever and connected to each other by manifold pipes, a FAS connection unit and an external filter-ventilation device creating a backwater, with insulating system installed in the same case housing, including equipped with starting device with ampoule with initiating liquid and two branch pipes regenerative cartridge accommodating a regenerative product based on potassium superoxide and a starting briquette, a breathing bag equipped with an overpressure valve connected to the regenerative cartridge through the nozzle, and with an air guide tube communicating through a heat exchanger with the under-mask space of the front part, which is a full face mask with a panoramic viewing window and two intercommunication devices, equipped with an exhalation unit of a two-valve type, which includes a body, a sealant, a support, a grid, an exhalation unit cover, an exhalation valve seat insert, an exhalation valve saddle and two leaves of the exhalation valve.

EFFECT: expansion of arsenal of technical means of respiratory protection, provision of high operational characteristics, reliability, possibility of increasing the time of protective action due to use of replaceable elements, possibility of switching operation modes by the user without switching off the apparatus.

6 cl, 23 dwg