Toroidal scavenged reservoir for fuel cell purge line system

Abstract

A fuel cell system includes a fuel cell stack, a separator and a scavenging reservoir. The separator is downstream of and in fluid communication with the fuel cell stack. The scavenging reservoir is downstream of and in fluid communication with the separator. The scavenging reservoir includes an inlet, an outlet, and a partially toroidal middle interconnecting the inlet and outlet. The partially toroidal middle has a radius of curvature, a torus diameter, and an arc length selected such that a minimum volume of liquid necessary to completely block passage of fluid therethrough is the same over a range of tilt angles defined by the minimum volume of liquid, the radius of curvature, and torus diameter. The arc length is based on the radius of curvature and the torus diameter.

Dependencies are inferred from the claim text.