PUMP UNIT Russian patent published in 2020 - IPC F04D13/06 F04D29/42 F04D29/62 

FIELD: pumps.

SUBSTANCE: group of inventions relates to pump units, in particular, to units of circulating pumps with wet rotor with controlled speed used in house heating systems. Pump assembly comprises a rotor lengthwise axis, an impeller, a pump housing, a bearing wheel, a drive motor comprising a stator and a rotor. Housing forms first radial inner base surface. Rotor and wheel are attached to axle. Unit has a flange, a rotor casing, a stator casing, the first radial bearing ring located in sliding contact with the axis, a bearing holder enclosing the centering ring relative to the casing base surface. Assembly has a neck ring connected to the body. Wheel is located between the holder and the ring in axial direction. Ring comprises a circumferential wall section, which at least partially passes into the wheel, or the wheel at least partially passes into the section. Ring section comprises cylindrical radial outer surface and inner surface. Surface is eccentric relative to surface.

EFFECT: inventions are aimed at creation of more compact design of pump unit and provision of accurate coaxial alignment of rotor axis relative to housing.

16 cl, 23 dwg