| 摘要 |
A breathing apparatus having a source of oxygen and a mouthpiece, which includes an inlet connected through a first one-way valve to receive inhaled gas, and an outlet having a second one-way valve to expel exhaled gas from a user, A scrubber canister is coupled to the mouthpiece and receives the output of the mouthpiece through the second one-way valve. The scrubber canister removes at least a portion of carbon dioxide from the exhaled gas from the user, and outputs carbon dioxide depleted gas. The scrubber canister has an inner canister and an outer canister and a plurality of vanes disposed between the inner canister and the outer canister. The vanes increase the dwell time of gas in the canister, thereby increasing the amount of carbon dioxide removed from the gas. Such construction can be implemented in rebreathers having radial, axial or cross-flow designs. |
