| 摘要 |
<P>PROBLEM TO BE SOLVED: To securely supply generation water to a humidifier and to secure excellent power generation performance with simple and compact constitution. <P>SOLUTION: A humidifier 36 which constitutes a fuel cell stack 10 includes a humidifier joint part 101, and resin-made piping 112 put in the humidifier joint part 101. A first inner wall surface 114a and a second inner wall surface 114b are provided in the resin-made piping 112 along a flow direction of off gas. An opening cross section of a first opening part 116a formed of the first inner wall surface 114a is set to be larger than an opening cross section of a second opening part 116b formed of the second inner wall surface 114b. In a boundary area between the first inner wall surface 114a and the second inner wall surface 114b, a plurality of groove parts 118 are formed which each have an inclined bottom surface 118a inclined inward from the first inner wall surface 114a to the second inner wall surface 114b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
