| 摘要 |
A fluid pump (10) includes an inlet (34) for introducing fluid into the fluid pump (10); an outlet (52) for discharging the fluid from the fluid pump (10); a motor (20) having an armature (54) which rotates about an axis (24) such that the armature (54) is supported at one end (46) by a first bearing (44) and at second end (90) by a second bearing (88), the motor (20) also having a stator (59) which circumferentially surrounds the armature (54) such that a fluid passage (65) is defined radially between the armature (54) and stator (59) through which the fluid flows from the inlet (34) to the outlet (52); a pumping arrangement (28) which is rotated by the armature (54) and which pumps the fluid from the inlet (34) to the outlet (52); a flow impedance member (98) extending axially in the fluid passage (65) which impedes circumferential flow of the fluid within the fluid passage (65), thereby generating a pressure gradient circumferentially within the fluid passage (65) which applies a lateral force (F L ) to the armature (54). |
