Self-draining centrifugal pump having an improved inlet

Details Self-draining centrifugal pump having an improved inlet Self-draining centrifugal pump having an improved inlet

1998-11-09

2000-08-15

Look, Edward K.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

415206, 415200, 415915, F04D 2944

Patent

active

061026573

ABSTRACT:
A centrifugal pump for use in whirlpool bath systems has an offset inlet chamber configured to provide a smooth transition from inlet to impeller which is suitable for one-step injection molding using two opposed molding cores that may be removed from the inlet in opposite directions. The chamber has a double "D" profile with opposite flattened side surfaces. The cross-sectional area of the chamber decreases progressively between a larger offset inlet aperture and a smaller, centered entrance to the impeller. This configuration improves pumping efficiency while reducing noise.

REFERENCES:
patent: 4586204 (1986-05-01), Daniels
patent: 5156535 (1992-10-01), Budris et al.
patent: 5408708 (1995-04-01), Mathis
patent: 5930852 (1999-08-01), Gravatt et al.

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