| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a fuel cell system from being frozen at preservation by removing moisture in the system. <P>SOLUTION: For the fuel cell system provided with an air pressure means 11 sending pressurized air to a fuel cell 1, and a humidifying means 50 for humidifying the air at an upstream side of the air pressure means 11, humidification by the humidifying means 50 is stopped at stoppage of the system, and at the same time, air discharged from the air pressure means 11 is supplied to an air reflux channel 80 by a pressure accumulating means 82. When pressure inside the pressure accumulating means 82 exceeds a given value, the air pressure means is stopped, and afterwards, a pressure release means 83 is made 'open' to discharge the air stored inside the pressure accumulating means 82 and reflux it toward a downstream side of an air supply channel 50. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
