IMPELLER STRUCTURE WITH IMPROVED ROTATION STABILITY

摘要

An impeller (3) for used in a fluid pump device (61) includes a shaft (39) controlled to revolve in a first direction; an impeller body (300) coupled to the shaft (39) and driven by the revolving shaft (39) to rotate, the impeller body (300) having a top surface (30), a bottom surface (32) and a circumferential surface (31); a first set of fluid-guiding members (301) disposed on the top surface (20) of the impeller body (300) for driving a fluid to flow along a centrifugal direction of the revolving shaft (39); and a second set of fluid-guiding members (311) disposed on the circumferential surface (31) of the impeller body (300). Each or at least one of the second set of fluid-guiding members (311) has a titling structure (3110) for driving the fluid to flow from the top to the bottom of the impeller (3) along a designated path on the circumferential surface (31).