| 摘要 |
The invention relates to a wet-rotor motor pump comprising a can (5) which separates the motor stator (4) from the rotor mounted in the can (5) on a motor shaft (2), said motor shaft (2) projecting into the pump chamber (10) and carrying, in said pump chamber, the impeller (1). A coaxial annular space (12), which is open towards the pump chamber (10), is provided on the rear of the impeller, the rear of the impeller having a throttled throughflow opening (15) in the region of the annular space (12), said throughflow opening connecting the annular space (12) to the interior of the impeller, especially to the pump intake side. |
