Flüssigkeitspumpe

摘要

A liquid pump apparatus according to the present invention comprises a housing (2, 71) forming a cylindrical liquid chamber (23), an inlet (21) formed at an upper central portion of the housing and communicating with a liquid source and the liquid chamber (23), an outlet (22) formed in a peripheral portion of the housing and communicating with the liquid chamber (23), a rotator (3, 51, 72) arranged in the liquid chamber (23) and having an upper cover (31) and a shroud (33, 53, 73), a projection formed at an upper central portion of the shroud (33, 53, 73) and located immediately below the inlet (21), a plurality of liquid paths (34, 54, 74) radially formed between the upper cover (31) and the shroud (33, 53, 73) to uniformly distribute blood from a central portion of the rotator (3, 51, 72) to a peripheral portion thereof, ball bearing (42, 78) rotatably supporting the rotator (3, 51, 72) with respect to the housing (2, 71), and motor (6) for applying a rotational force to the rotator, wherein each of the plurality of liquid paths (34, 54, 74) is formed so that the cross-sectional area thereof is substantially uniform or reduced.