The working principle of Chemical Oxygen Self Rescuer

The Chemical Oxygen Self Rescuer  is a personal respiratory protection device designed based on the principle of chemical oxygenation. The respiratory protector is isolated from the outside air.

When the wearer exhales, the exhalation enters the oxygen generating tank through the mouthpiece, the breathing hose, and the cooling net, and the water vapor and carbon dioxide in the exhalation react with the oxygen generating agent to generate oxygen into the air bag; when inhaling, the oxygen stored in the air bag is regenerated. After the oxygen generating agent, it enters the human body from the breathing hose of the oxygen generating tank, the mouthpiece, and is cooled by the cooling net to complete a breathing cycle.Chemical Oxygen Self Rescuer.

When the oxygen generated by the oxygen generator exceeds the oxygen consumption of the human body, the pressure in the air bag gradually increases, and when the exhaust pressure of the exhaust valve is reached, the exhaust valve on the air bag of the self-rescuer automatically opens to discharge excess gas. When less than the exhaust pressure, the exhaust valve automatically closes.