PUMP UNIT Russian patent published in 2019 - IPC F04D13/06 F04D29/62 

FIELD: engines and pumps.

SUBSTANCE: invention relates to electric pump units, in particular, with a "wet" rotor, usually used as circulation pumps for domestic heating systems. Pump unit contains impeller (12) with rotor axis (R), pump casing (11), drive motor with stator (14) and rotor (51) for driving wheel (12), rotor (51) casing (57) and (13) stator (14). Casing (57) of rotor (51) contains a flange having a lateral surface inserted inside the peripheral wall of pump casing (11). Side surface of the flange of casing (57) of rotor (51) has at least three radial protrusions abutting the peripheral wall of pump casing (11) and centering casing (57) of rotor (51) relative to this peripheral wall of pump casing (11).

EFFECT: invention is aimed at creation of a pump unit with a more compact design.

19 cl, 9 dwg