FUEL GAS CIRCULATION APPARATUS
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United States of America Patent
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Issued Date -
Aug 24, 2017
app pub date -
Feb 21, 2017
filing date -
Feb 24, 2016
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Abstract
In a fuel gas circulation apparatus, an injector for injecting a fuel gas is inserted into an attachment hole of a body. A cylindrical nozzle is provided integrally with a distal end of the injector. A diffuser is provided downstream of the injector. The diffuser mixes a redundant fuel cell and the injected fuel gas. Connection channels are formed at the proximal end of the diffuser for circulation of the off gas. A reduced diameter portion having the reduced flow channel diameter is formed downstream of a chamber where the connection channels are provided. A nozzle injection hole at the distal end of the nozzle is positioned to face, and coaxially with the reduced diameter portion to circulate the off gas toward a fuel cell stack under operation of the negative pressure generated by the diffuser.
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