| 摘要 |
FIELD: machine building.SUBSTANCE: axial-blow fan impeller comprises hub, bushing, discs to couple said bushing with said hub, vanes with butts and attachments of said butts to said vanes. Vane butt has collar while vane attachment is equipped with barrel with inner annular groove and lock ring whereto pressed is the vane butt collar. Note here that said barrel is fixed in discs groves while lock ring is fixed in said barrel groove.EFFECT: lower metal intensity and moment of inertia.3 dwg |
