EJECTOR Russian patent published in 1995 - IPC

FIELD: handling various media. SUBSTANCE: mounted coaxially relative to mixing chamber with diffuser is helical blade insert; leading edges of blades of this insert of lesser diameter are located inside active nozzle and those of larger diameter are located outside nozzle and intersect trailing edge of nozzle. Inner edges of blades are located on ejector axis. Leading and trailing edges of blades of larger diameter have varying radius increasing from nozzle. Each blade of stage of larger diameter has cuts which begin with radius equal to or more than radius of nozzle outlet section. Cuts are made in direction from ejector axis to wall of mixing chamber. Radius of each point of split line increases with distance relative to nozzle outlet section. Sections of blades after each cut are smoothly bent in direction of vortex over the line passing through point of beginning of cut. Blades of larger diameter have holes; generatrices of walls of these holes are inclined to longitudinal axis of ejector at acute angle in way of flow of active medium. EFFECT: enhanced reliability. 28 cl, 13 dwg