IMPELLER OF AXIAL FAN Russian patent published in 2011 - IPC F04D19/02 

Abstract RU 2422681 C1

FIELD: engines and pumps.

SUBSTANCE: holes are made in the hub located at an angle of 90 degrees to its axis as per the number of blades; pin is fixed in each hole; slot for arrangement and turn of the base is made in each pin; each rotation axis is installed in the holes made in pin on opposite sides of the slot and passes through the slot; springs are made in the form of torsion springs arranged on axes of bases; at that, one free end of each spring is connected to the pin, and the other end is connected to the base, and edges of pins protruding to outer surface of hub are made in the form of cylindrical surface coaxial to hub, the diameter of which is equal to outer diameter of the hub.

EFFECT: improved manufacturability and reliability.

5 dwg

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RU 2 422 681 C1

Authors

Belousov Nikolaj Igorevich

Dates

2011-06-27Published

2009-12-24Filed