| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system capable of quick activation even under a low-temperature environment with a check valve of a circulation gas flow channel in danger of being frozen, in a system equipped with a plurality of ejectors. <P>SOLUTION: The fuel cell system is provided with, for instance, a solid polymer type fuel cell 1 and a small and a large ejectors 6, 5 connected in series. A suction port 6b of the small ejector 6 is connected with an outlet of an anode 1a. A discharge port 6c of the small ejector 6 is connected with a suction port 5b of the large ejector 5. A discharge port 5c of the large ejector 5 is connected with an inlet of the anode 1a. With such connection, a fuel gas circulation channel is formed from the anode outlet to the inlet of the anode 1a through the suction port 6b of the small ejector 6, the discharge port 6c of the small ejector 6, the suction port 5b of the large ejector 5, and the discharge port 5c of the large ejector 5. Hydrogen is directly supplied to the small ejector 6 from a hydrogen pressure control valve 3, and to the large ejector 5, hydrogen is supplied through a shutoff valve 4. <P>COPYRIGHT: (C)2008,JPO&INPIT |
