Centrifugal fluid pump assembly

摘要

A centrifugal fluid pump assembly (1) includes a centrifugal fluid pump and a control device (6). The centrifugal fluid pump comprises a pump section (2) including a housing (20) and an impeller having a first magnetic material (25) and a second magnetic material (28) and accommodated for rotation in the housing and without contacting the housing, an impeller rotational torque generating section (3) including a rotor (31) having a magnet (33) for attracting the first magnetic material of the impeller and a motor (34) for rotating the rotor, and an impeller position control swoon (4) having an electromagnet (41) for attracting the second magnetic material of the impeller. The control device (6) has a function of limiting an input of a number of rotations of the motor more than a predetermined number of rotations or limiting an input of a motor-driving current having a value more than a predetermined value.