ELECTRICALLY DRIVEN PUMP UNIT Russian patent published in 2017 - IPC F04D13/06 

FIELD: engines and pumps.

SUBSTANCE: electrically driven pump unit includes a metal housing, a motor mounted on the housing, and wheels disposed on its shaft. Outside the motor, the metal sealing casing with the electrical connector is installed, attached to the housing. Between the two conductors of one of two power supply poles and the electronic switch, a group of n (n = 2, 3, etc.) resistors connected in parallel is sequentially mounted. In the casing wall a cylindrical opening is made, in which a metal cup is installed, the bottom of which is maximally removed from the electric motor axis. In the cup cavity on its bottom the metal bracket with slots is fixed, and the resistors are mounted on the bracket on the bottoms of the grooves by means of screws. In the bracket wall between the groove bottoms, the openings for conductors are made.

EFFECT: increase of reliability.

3 dwg