Chemical oxygen generator with chemical cores arranged in parallel
AssigneeBE Aerospace, Inc.
InventorsGerald MAROSKE, Rainer ERNST, Yunchang ZHANG, Girish S. KSHIRSAGAR
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Abstract
A chemical oxygen generator includes multiple parallel sequentially connected chemical core sections that extend the duration of operation of the chemical oxygen generator. An end of a first core section is contiguous with a chemical core high reactivity section, and a thermal insulation layer is disposed between an end of a second core section and the chemical core ignition plate, as well as between the bodies of the first and second core sections. A chemical core transition section is disposed between the other end of the first core section and the second core section, to insure that the reaction front propagates properly.
Claims21
A chemical oxygen generator including an oxygen generating composition for producing a supplemental breathable gas when a reaction front propagates through the oxygen generating composition, the chemical oxygen generator comprising:
- a chemical oxygen generator housing having an ignition end and an opposing oxygen outlet end;
- a chemical core ignition plate disposed in said ignition end of said chemical oxygen generator housing;
- a chemical core high reactivity section including an oxygen generating composition disposed in said chemical oxygen generator housing immediately adjacent to and contiguous with said chemical core ignition plate;
- a plurality of parallel sequentially connected chemical core sections disposed in said chemical oxygen generator housing, said plurality of parallel sequentially connected chemical core sections each including an oxygen generating composition and having first ends oriented toward said ignition end of said chemical oxygen generator, second ends oriented toward said outlet end of said chemical oxygen generator, and body portions between said first and second ends extending a length along a longitudinal axis of said chemical oxygen generator housing, a first end of a first one of said plurality of parallel sequentially connected chemical core sections disposed immediately adjacent to and contiguous with said chemical core high reactivity section;
- a thermal insulation layer disposed in said chemical oxygen generator housing between said second end of a second one of said plurality of parallel sequentially connected chemical core sections and said chemical core ignition plate, between said second end of said second one of said plurality of parallel sequentially connected chemical core sections and said first end of said first one of said plurality of parallel sequentially connected chemical core sections, and between said body of said second one of said plurality of parallel sequentially connected chemical core sections and said body of said first one of said plurality of parallel sequentially connected chemical core sections;
- and
- a chemical core transition section including an oxygen generating composition disposed in said chemical oxygen generator housing between and immediately adjacent to and contiguous with said second end of said first one of said plurality of parallel sequentially connected chemical core sections and said first end of said second one of said plurality of parallel sequentially connected chemical core sections, said chemical core transition section being configured to insure that the reaction front propagates from said second end of said first one of said plurality of parallel sequentially connected chemical core sections to said second end of said second one of said plurality of parallel sequentially connected chemical core sections when the reaction front reaches said second end of said first one of said plurality of parallel sequentially connected chemical core sections.
Dependencies are inferred from the claim text.