Regenerative canister of a self-contained oxygen-breathing apparatus on chemically fixed oxygen

Claim 1

A regenerative canister of a self-contained oxygen-breathing apparatus on chemically fixed oxygen, comprising: an outer casing having ends; an inhalation tube fluidically connected with said outer casing for supplying regenerated air to the respiratory organs; an exhalation tube communicating with said outer casing for the exhaled air to supply thereinto; an inner shell accommodated in said outer casing and communicating with said exhalation tube, said inner shell having air-permeable ends; an oxygen-delivering chemical situated in said inner shell between the ends thereof; a top and a bottom collector space defined between said ends of the inner shell and of the outer casing, a passageway defined between said inner shell and outer casing fluidically communicating said top and bottom collector spaces, and said inhalation tube communicating with said top collector space; a filter provided in said inhalation tube; a starting device adapted for initiating the evolution of oxygen by said oxygen-delivering chemical and located on said outer casing; air-permeable transverse partitions installed substantially in the central portion of said inner shell and subdividing the interior thereof into two compartments; a distributing chamber formed by said transverse partitions and the walls of said inner shell, said chamber communicating with said starting device and said exhalation tube so as to direct the exhaled air from said distributing chamber to said ends of the inner shell through the bulk of said oxygen-delivering chemical; at least two additional transverse partitions installed in each compartment of said inner shell so as to establish a mixing chamber therebetween and to divide said oxygen-delivering chemical into at least two layers as along the direction of air flow from said distributing chamber to the ends of said inner shell; heat-distributing elements made of a heat-conducting material and located in each of the compartments of the inner shell in the bulk of said oxygen-delivering chemical on its section running from said distributing chamber to the layer of the oxygen-delivering chemical adjacent to the end of said inner shell for heat distribution and withdrawal from the oxygen-delivering chemical situated on said section.