Combination of injector-ejector for fuel cell systems

Details Combination of injector-ejector for fuel cell systems Combination of injector-ejector for fuel cell systems

2004-07-28

2008-01-22

Ryan, Patrick Joseph (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000

Reexamination Certificate

active

07320840

ABSTRACT:
A fuel cell system including a combined injector/ejector system. The pressure of a hydrogen gas being injected into the fuel cell system by the injector acts as a pump that draws an anode exhaust gas being carried by the ejector back into the fuel cell system. The respective gases mix together in proximity to the ejector prior to being introduced back into the fuel cell system. A pressure controller can be provided to control the pressure of the hydrogen gas applied to the injector to more effectively draw the anode exhaust gas. In this manner, the need for a separate pump for the ejector, and the energy required for its operation, is eliminated or at least lessened, thus increasing the overall energy efficiency of the fuel cell system.

REFERENCES:
patent: 5441821 (1995-08-01), Merritt et al.
patent: 7037609 (2006-05-01), Sugawara et al.
patent: 7105243 (2006-09-01), Morishima et al.
patent: 102 51 878 (2003-07-01), None

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