| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cooling system for a fuel cell that maintains the fuel cell in a favorable cooled state, with a simple configuration, even when there is a temperature rise in the fuel cell. <P>SOLUTION: A radiator 18 and a circulating pump 19 are connected to a cooling water circulating passage 17 of a fuel cell 11. A cooling water tank 20 is provided between a downstream side of the fuel cell 11 and the circulating pump 19 in the cooling water circulating passage 17. A cylindrical body 21 is joined to the cooling water tank 20, and an orifice 22 of the cylindrical body 21 opens into an air off gas discharge passage 16. Flow of air off gas passing through the air off gas discharge passage 16 deforms a diaphragm 23 in such a manner that the diaphragm 23 swells out toward the air off gas discharge passage 16, resulting in an increase in capacity of the cooling water tank 20. Thus, an increase in pressure difference between an intake side and a discharge side of the circulating pump 19 improves the cooling capacity of the circulating pump 19 for cooing the fuel cell 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
