ISOLATING RESPIRATORY APPARATUS Russian patent published in 2004 - IPC

FIELD: respiratory apparatuses. SUBSTANCE: respiratory apparatus comprises cartridge with perforated envelope inserted into cartridge. Cartridge contains actuating briquette and regenerative product, which evolves oxygen and absorbs carbon dioxide. Apparatus comprises breathing bag attached to cartridge. Breathing bag has pressure relief valve, heat-exchanger enclosed into case, respiratory hose with facial part and gas-distribution device. Heat-exchanger is located into cartridge and formed as annular chamber connected by one end to perforated envelope. Heat-exchanger is arranged in spaced relation to perforated envelope. Heat-exchanger comprises netting adjoining side wall thereof and eutectic salts melt is put into heat-exchanger. EFFECT: increased efficiency. 4 cl, 6 dwg