JET PUMP Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: converging mixing chamber is mounted in a housing to form a ring space. The chamber has neck, diffuser passage, and by-pass passage. Chambers for discharging fluid provided with by-pass valves are mounted on the mixing chamber in the zone of the by-pass valves. Active nozzle is coaxially mounted in the housing to form a ring fluid nozzle. The ratio of the area of the outlet section of the fluid nozzle to the area of the minimum cross-section of the mixing chamber is less than 3.25 but is more or equal to 0.1. EFFECT: enhanced efficiency. 3 cl, 1 dwg