Patent ID: 7687171
Filing Date: 2010-03-30
Classification: F04F,H01M,Y02E,Y10T

Abstract:
1. A multi-stage in-line cartridge ejector for a fuel cell system, the ejector being positioned between a hydrogen tank and a fuel cell stack, the ejector comprising: at least one ejector main body for supplying hydrogen, each ejector main body comprising a plurality of nozzles arranged in line with a predetermined gap, in which the diameters of the respective nozzles become larger from an inlet side of the ejector main body toward an outlet side thereof, and a plurality of sub-inlets formed on an outer surface of the ejector main body to be connected to the gap or gaps between the nozzles; and a housing accommodating the ejector main body, the housing including a main inlet for intake of recirculated hydrogen, through which the ejector main body is in fluid communication with a hydrogen recirculation line, whereby the recirculated hydrogen gas is introduced into the ejector main body via sub-inlets when a high pressure flow of hydrogen passes through an in-line nozzle, wherein the inline nozzles are configured to inject fluid through one another as the fluid progresses from the inlet of the ejector to the outlet, whereby the amount of flow gradually increases while passing through the injector.