Patent ID: 8257880
Filing Date: 2012-09-04
Classification: H01M,Y02E

Abstract:
1. A gas separator for a fuel cell configured to have concavo-convex structures formed in a mutually reversed relation on two sides thereof and to define a flow path for a first fluid on a first side thereof and a flow path for a second fluid on a second side thereof, the gas separator comprising: a center area designed to have therein multiple linear convexes, which are extended in a first direction to introduce the first fluid and the second fluid in the first direction on the respective sides and are arranged to make a flow of the first fluid in one fixed direction on at least the first side, the center area being arranged to cause non-uniformity of a flow rate distribution of the first fluid based on a relation to a flow direction of the first fluid on the first side; and flow distribution areas arranged across the center area to be adjacent to respective ends of the multiple linear convexes and designed to have multiple first projections of a circular cross section that are protruded from the first side to be arranged apart from one another at a preset interval, and multiple second projections that are protruded from the second side to be arranged apart from one another, each of the flow distribution areas being structured to make a flow of the first fluid to be supplied from or discharged to the flow path of the first fluid formed in the center area on the first side, wherein the first fluid on the first side is made to flow from a region close to one end section in a direction perpendicular to the first direction of one flow distribution area to a region close to an opposed end section in the direction perpendicular to the first direction of the other flow distribution area, in the one flow distribution area, a plurality of the first projections formed in a region close to the opposed end section in the direction perpendicular to the first direction are designed to have a larger diameter of the cross section than the plurality of the first projections formed in another region, and in the other flow distribution area, the plurality of the first projections formed in a region close to the one end section in the direction perpendicular to the first direction are designed to have a larger diameter of the cross section than the plurality of the first projections formed in another region.