JET PUMP Russian patent published in 2005 - IPC

FIELD: mechanical engineering; jet pumps and ejectors.

SUBSTANCE: proposed jet pump contains working flow nozzle, passive flow nozzle, mixing chamber and diffuser. Inner surface of working flow nozzle is transition from round section at inlet into section in form of equilateral triangle at outlet with side where a is length of side of triangle, R is radius of round nozzle whose cross-section area is equal to area of considered triangle to produce inversion of flow at forming laminary round jet with radius and turbulent jets in areas at vertice of triangle with radii.

EFFECT: increased efficiency of jet pump owing to multiple increase in area of accompanying sucked-in flow at constant area of outlet cross section of working flow nozzle by increasing zone of mixing of turbulent boundary layer.

4 dwg