ROTOR STACK OF SUBMERSIBLE ELECTRIC MOTOR Russian patent published in 2017 - IPC H02K1/27 H02K1/28 

FIELD: engine devices and pumps.

SUBSTANCE: rotor stack comprises a multi-pole magnet system with a magnetic circuit and permanent magnets radially magnetized arranged on its active part, which outer cylindrical surface is enclosed by a retaining bandage. There are end flanges arranged on both sides on inactive sections of the magnetic circuit projecting beyond its active part. Each pole of the magnetic system along the length comprises at least two sector permanent magnets. The bandage and the end flanges are made in form of separate parts. The diameter of the inactive sections of the magnetic circuit exceeds the diameter of its active part. The end flanges are connected to the corresponding inactive sections of the magnetic circuit by a threaded connection.

EFFECT: improved manufacturability.

6 cl, 2 dwg