| 摘要 |
The object of the present invention is to ensure good circulation of the exhausted hydrogen-containing gas independent of an increase/decrease in the flow rate of the hydrogen-containing gas and, at the same time, to simplify and reduce the size of the system. The present invention provides a fuel cell system comprising cell units 11 that carry out power generation as the hydrogen-containing gas and the oxygen-containing gas are separated from each other and then flow and join with each other, a feeding channel 20a having an ejector 22 arranged therein for refluxing the exhausted hydrogen-containing gas exhausted from the cell units 11 back to the cell units 11, and a bypass channel 20b that has the hydrogen-containing gas flowing to the cell units 11 bypass the ejector 22. In this fuel cell system, when the flow rate of the hydrogen-containing gas fed to the cell units 11 is lower than the prescribed level, the hydrogen-containing gas is made to flow to the feeding channel 20a having the ejector 22 arranged therein; on the other hand, when the flow rate of the hydrogen-containing gas is over a prescribed level, the hydrogen-containing gas is made to flow in the bypass channel 20b. |
