Patent ID: 7306437
Filing Date: 2007-12-11
Classification: B01D,F04F,Y02A

Abstract:
1. A pressure exchanger for transferring pressure energy from a first fluid flow to a second fluid flow, comprising: a substantially cylindrical-shaped pressure vessel; a pair of end covers located on opposing ends of the pressure vessel, each end cover having at least one passage formed therein; a rotor, disposed inside the vessel, comprising multiple through-going coaxial ducts and arranged for rotation about a longitudinal axis of the exchanger between the pair of opposing end covers, the rotor adapted to guide fluid exchange both within and external to the rotor; a pair of fluid inlets; and a pair of fluid outlets in communication with the fluid inlets to promote a first fluid flow and a second fluid flow through the rotor, wherein the opposing end cover passages pass low pressure fluids and are oriented with a degree of inclination with respect to the longitudinal axis to impart a uni-rotational impulse momentum onto the rotor regardless of flow direction of the first and second fluid flows relative to the pressure vessel, through an inlet tangential flow vector component in the direction of rotation and an outflow tangential flow vector component in an opposite direction of rotation, wherein the rotor rotates about a central axle with each axle end affixed to the opposing end covers.