Patent ID: 6056506
Filing Date: 2000-05-02
Classification: F04D

Abstract:
A pump casing comprising:an inlet conduit having a first interior cross-sectional area;a volute having a hollow interior adapted to house a pump impeller; anda flow directing chamber intermediate the inlet conduit and the volute, the chamber having a second interior cross-sectional area greater than the first interior cross-sectional area, the chamber having an inlet opening at a lower portion of the chamber and an outlet opening at an upper portion of the chamber, the inlet opening is in fluid communication with the inlet conduit, the outlet opening is in fluid communication with the volute, the outlet opening having a third interior cross-sectional area less than the second interior cross-sectional area, the chamber having a front wall adjacent the inlet opening and a generally cylindrical peripheral wall extending from the front wall toward the volute, the front wall and peripheral wall being adapted to direct a flow of fluid from the inlet conduit to the volute, the front wall having a generally conical flow directing surface with an apex pointed toward the outlet opening of the chamber.