| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a scavenging system for a fuel cell that reduces a scavenging-air introducing valve and a scavenging-air exhaust valve in size and weight. <P>SOLUTION: The scavenging system 4 has a scavenging air introducing part 40 for supplying oxidant gas from an oxidant gas supply means 3 to an anode electrode 10a during scavenging processing, a scavenging air introducing valve 41 for controlling the introduction flow rate of the oxidant gas by the scavenging air introducing part 40, a scavenging-air exhaust path 15 for exhausting the scavenging exhaust gas from the anode electrode 10a, and a scavenging-air exhaust valve 43 for controlling the scavenging-air exhaust flow rate of the scavenging exhaust gas in the scavenging-air exhaust path 15. The scavenging-air introducing part 40 is provided with an ejector 42 for scavenging-air circulation, introduces the oxidant gas into a nozzle 42a of the ejector 42 for scavenging-air circulation, connects the scavenging-air exhaust path 15 to a suction part 42b of the ejector 42 for scavenging-air circulation so as to collect the scavenging exhaust gas, and allows the oxidant gas and the scavenging exhaust gas merged with each other by the ejector 42 for scavenging-air circulation to be introduced into the anode electrode 10a. <P>COPYRIGHT: (C)2009,JPO&INPIT |
