| 摘要 |
In a fuel cell having a cell structure in which a gas flow passage is formed by an expanded metal, a bond portion connecting a mesh of the expanded metal stands partially upright in a position where a bond length is shortened so as to form a part of a strand portion. Hence, in an opening formed by the mesh of the expanded metal, a surface area on which front and rear openings overlap in a direction increases when seen from an direction. Thus, a sectional area of gas flow passages constituted by a continuum in the direction of the openings overlapping in the direction increases. As a result, a gas flow flows without making repeated narrow turns, leading to a reduction in gas pressure loss. |
| 主权项 |
1. A fuel cell having a cell structure in which a gas flow passage is formed by an expanded metal disposed between cell constitutional members, the expanded metal being configured to have a mesh,
wherein the mesh includes a plurality of bond portions, and a plurality of strand portions in at least a first plane and a second plane, the first plane being parallel to the second plane, and the first plane and the second plane being arranged in a materials forwarding direction, wherein each of the plurality of strand portions includes at least one of an inclined segment and a non-inclined segment, the non-inclined segment extending in a tool forwarding direction and the inclined segment elevating from the tool forwarding direction, the tool forwarding direction being orthogonal to the materials forwarding direction, wherein the plurality of bond portions connect non-inclined segments of strand portions in the first plane to non-inclined segments of strand portions in the second plane to form a plurality of openings, each of the plurality of openings having an upper-half portion and a lower-half portion when each of the plurality of openings is halved along a diagonal in the tool forwarding direction, wherein the upper-half portion is shifted relative to the lower-half portion in the tool forwarding direction, and wherein the plurality of openings are repeatedly formed for a predetermined number of times such that the plurality of openings are arranged to form a wave-like passage in the materials forwarding direction. |
