SEALED MULTI-STAGE CENTRIFUGAL ELECTRIC PUMP Russian patent published in 2023 - IPC F04D13/06 F04D29/58 F04D29/66 F04D29/41 

FIELD: pumps.

SUBSTANCE: sealed multi-stage centrifugal electric pump is intended for pumping the cooling agent in the circuit of a temperature control system. Electric pump is designed as follows: the working fluid enters the pump through the inlet branch pipe, then the pre-connected screw, then enters the blades of the closed-type centrifugal wheel, followed by the liquid passing through the channels of the annular diffuser, thereby cooling the stator of the electric engine, and entering the blades of the second centrifugal wheel, passing the looped guide apparatus, then being discharged from the electric pump through the outlet branch pipe.

EFFECT: increased operational life of the electric pump, as well as at a wide temperature range and reduced input pressure.

1 cl, 2 dwg