HEAT EXCHANGER OF SELF-CONTAINED BREATHING APPARATUS Russian patent published in 2017 - IPC A62B9/00 

FIELD: satisfaction of human life necessities.

SUBSTANCE: invention relates to respiratory protection devices, in particular to constituent parts of self-contained self-rescuers with chemically bonded oxygen which are used for emergency short-term respiratory protection in emergency situations connected with the formation of environment unsuitable for breathing. The heat exchanger of the self-contained breathing apparatus comprising a housing with an inlet and an outlet nozzles for attaching to the unit of respiratory apparatus isolation and regenerative canister of the breathing apparatus, a gas-permeable heat-capacious material located in the cavity of the housing between the mentioned nozzles in which the gas-permeable heat-capacious material is made in the form of a cassette containing a central tube and fibrous substrate with a coolant applied on one or both sides, wherein the coolant is a mixture of solid high-molecular hydrocarbons of limit nature, modified by nanomaterial. The substrate can be wound on the central tube, provided with an expiratory valve, in a spiral and a nodeless net can be placed between the layers of the substrate, or it is can made in the form of corrugated ribbon, which corrugations are parallel to the generatrix. External corrugations are fixed on an additional shell, and the internal corrugations are attached to the central tube.

EFFECT: increased efficiency of cooling the respiratory gas mixture by reducing the mass-dimensional characteristics and reducing the breathing resistance.

8 cl, 12 dwg