Tümmler sports diving oxygen kit
Barakuda 1953 sportsdiving oxygen rebreather
Mode of action:
The completely empty breathing bag (a) is filled with at least 99% pure oxygen from the cylinder (f). The diver, who has exhaled (breathed out) his lungs before starting to breathe, now breathes in the pure oxygen through the inhalation valve (c) and through the inhalation hose (k). The exhaled air, which consists of unused, pure oxygen and carbon dioxide, passes through the exhalation tube (j) and the exhalation valve (d) through the cartridge (b), which is filled with lime. The lime has the property of binding (absorbing) the carbonic acid. The exhaled air purified from the carbonic acid, which now consists only of pure, unused oxygen, now enters the breathing bag (a), from which it is inhaled again as described above.
The breathing air thus undergoes a continuous cycle (rebreather). As some oxygen is expelled and absorbed by the lungs with each breath, the amount of air in circulation is constantly reduced. Therefore, some pure oxygen from the cylinder (f) must be added from time to time to supplement this.
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