FIELD: ventilation and air conditioning.
SUBSTANCE: invention relates to fan-making, in particular, to impellers of centrifugal fans. Impeller of centrifugal fan, containing root and cover discs, blades with filler in form of foam plastic, installed between them, is characterized by that discs have through slots, equidistant to inner end contours of blades, adjacent to discs, and in body of blades on side of their ends are installed and connected profiled inserts along contours of through grooves in discs with projecting ends by value of thickness of adjacent discs, protruding ends of inserts are installed in through slots of discs and are welded by arc welding from outer side along conjugated closed contours of slots of disks and inserts.
EFFECT: invention can be used for ventilation of premises, in transport machine building, etc.
3 cl, 3 dwg
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SU1116223A1 |
