FIELD: engines and pumps.
SUBSTANCE: rotary pump comprises multiple radial impellers and multiple radial diffusers with multiple vanes. Diffuser vanes have trailing edges flexing at transition section at angle making, at least, thirty degrees, into diffuser outlet channels. Note here that multiple diffuser vanes form diffuser channels extending through said transition section and into appropriate diffuser outlet channel with minimum change in cross-section area to decrease fluid separation.
EFFECT: higher pump efficiency.
24 cl, 6 dwg
