| 摘要 |
PROBLEM TO BE SOLVED: To provide an ejector circulation equipment and a fuel cell system in which no variable mechanism is provided in the ejector, while a starting fuel gas and an exhaust circulation gas can be mixed in a fixed ratio in the wide actuation range of gas flow rate. SOLUTION: An ejector 7 has a first supply mouth 9 connected to a first nozzle, a second supply mouth 10 connected to the down stream of the first nozzle and the upper stream of a second nozzle having a cross sectional area larger than that of the first nozzle, and a third supply mouth 11 connected to the down stream of the second nozzle. In a low loading of the fuel cell, shutout valve 18 is closed, then a three-way valve 16 is settled in a first state opening directing to the second supply mouth 10 to supply the starting fuel gas into the first supply mouth 9, and to supply the exhausted circulation gas from a fuel electrode 2 to the second supply mouth 10. In a high loading, the shutout valve is opened, then the three-way valve 16 is settled in a second state opening directing to the third supply mouth 11 to supply the starting fuel gas into the second supply mouth 10, and to supply the exhaust circulation gas into the third supply mouth 11. |
