Breathing apparatus

A - Human Necessities – 62 – B

Patent

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Details

A62B 7/10 (2006.01)

Patent

CA 2625592

A breathing apparatus provides circulated air within a hood surrounding a user's head and utilizes active scrubbing to remove carbon dioxide from the air in the hood. The breathing apparatus includes a heat sink that provides cooling to the circulated air. A method for cooling air circulated within a breathing apparatus includes operating an air pump to circulate the air so that the air comes into contact with a heat sink to which the air releases heat. In an embodiment, a compressed oxygen gas cylinder releasing the compressed oxygen acts both as a driver for a Venturi device that operates as an air pump and as a heat sink.

L'invention concerne un appareil respiratoire permettant à de l'air de circuler dans une cagoule entourant la tête d'un utilisateur et permettant un frottement actif pour éliminer le dioxyde de carbone de l'air dans la cagoule. L'appareil respiratoire comprend un dissipateur thermique permettant de refroidir l'air en circulation. Le procédé de refroidissement de l'air en circulation dans l'appareil respiratoire consiste à utiliser une pompe à air pour faire circuler l'air de façon que l'air vienne en contact avec le dissipateur thermique dans lequel l'air libère la chaleur. Dans un mode de réalisation, un cylindre à oxygène comprimé libérant l'oxygène comprimé sert à la fois de dispositif de commande d'un dispositif de Venturi utilisé comme pompe à air et de dissipateur thermique.

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