Hot water circulation pump with hydro dynamic thrust bearing

摘要

The present invention is characterized in that the motor housing is enclosed by a pump housing and a power source is applied to a stator in the motor housing to rotate the rotor axially mounted on the rotary shaft, thereby rotating the rotary shaft, The circulation water flowing into the pump housing through the inlet port, that is, the hot water, is discharged by the pressure difference generated when the impeller collides with the outer wall of the pump housing by centrifugal force, An upper bushing bearing which axially supports the rotary shaft in a radial direction and a plurality of guide grooves which are located between the rotor and are spirally formed on the sliding surface of the upper bushing bearing, Hydrodynamic /RTI It relates to a hot water circulation pump having a bearing.