Scoop for removing fluid from rotating surface of two-phase reaction turbine

Claim 1

In combination with a wheel providing a rotating peripheral surface with an annular body of liquid supported on said surface and rotating with the wheel, the improvement comprising (a) a scoop projecting partially into said rotating annular body of liquid, (b) means mounting the scoop for rotation about an axis and concentrically with said annular body of liquid, and in a forward direction in response to force transmission to the scoop from liquid entering the scoop, (c) the scoop having an interior surface to turn the entering liquid for discharge from the scoop in a relatively rearward direction, (d) substantially, the entirety of the scoop interior rearwardly of said interior surface being rearwardly open to the exterior, (e) the scoop interior surface having a lip and a "run-in" first portion that extends generally tangentially and flatly relative to the entering liquid and forwardly from said lip past which the liquid relatively enters the scoop, (f) the scoop interior surface having a second portion which merges with said first portion and then locally curves throughout approximately 180°, (g) the scoop interior surface having a "run-out" third portion which extends flatly and substantially parallel to said first portion, and merges with said curved second portion at a location closer to said axis than said first portion, said third portion having a lip past which the liquid relatively leaves the scoop in said rearward direction, (h) the scoop having laterally opposed, generally parallel side walls extending at substantially 90° to said first and third portions of the scoop interior surface.