Patent ID: 7488158
Filing Date: 2009-02-10
Classification: F04C,F04D

Abstract:
1. A liquid ring pump comprising: an external housing enclosing a volume including a lower fluid reservoir; a rotatable inner housing within the volume of the external housing, the inner housing enclosing an inner fluid chamber; a pitot tube providing fluid communication between the lower fluid reservoir and the inner fluid chamber; and a baffle attached within the lower fluid reservoir and adapted to minimize rotation of fluid in the lower fluid reservoir when the inner housing rotates; wherein the housings and pitot tube are adapted so that when the inner housing rotates, fluid flows from the lower fluid reservoir through the pitot tube into the inner fluid chamber to develop a liquid ring within the inner fluid chamber such that an inner radial wall of the liquid ring is just radially outward from a point where the pitot tube enters the inner fluid chamber.