Flow module, especially fuel cell

摘要

The module has each fluid admission and discharge chamber extending over at least quarter of edge length of flow field A flow module, especially a fuel cell, has structured flow plates on one side or both sides with a number of flow channels (K), between which are formed flow chambers for three or four fluids. At least one fluid admission chamber (Z1-Z3) and one fluid discharge chamber (A1-A3) is present per chamber. The flow channels inside one chamber are parallel to one another and all connect one of the fluid admission chambers to one of the fluid discharge chambers. The flow channels have the same length. The entirety of flow channels of one chamber forms a rectangular flow field which has point symmetry about its mean point. Each fluid admission chamber and each discharge chamber extends at least over a quarter of the edge length of the flow field. The flow channels go out over the whole length of the fluid admission chamber from it and they open out over the whole length of the fluid discharge chamber into it. The flow chambers for one of the fluids have two deflections.