Free-flow-pump

Details Free-flow-pump Free-flow-pump

1982-12-01

1984-10-09

Scott, Samuel

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing with mounting means

415109, 415209, 415219A, 415219C, 415206, F04D 2944

Patent

active

044758685

ABSTRACT:
The free-flow pump has an impeller housing (9, 10) laterally of its free flow chamber (4), and the impeller (6) is located in the impeller chamber (9, 10). The external, radial limiting member (10) of the impeller housing is drawn forwardly into the free flow chamber so as to decrease in the direction of rotation from the housing tongue (11) to the pressure pipe outlet. The limiting member (10) causes a constriction in the external portion (4') of the flow chamber, and such constriction decreases from the housing tongue towards the pressure pipe outlet. These measures permit the pump characteristics to be improved, and in particular the throttle characteristic of the free-flow pump can be stabilized.

REFERENCES:
patent: 3171357 (1965-03-01), Egger
patent: 3542496 (1970-11-01), Bergeson
patent: 3547554 (1970-12-01), Willette
patent: 3741679 (1973-06-01), Johnston
patent: 3918829 (1975-11-01), Korzec
patent: 4213742 (1980-07-01), Henshaw
patent: 4307995 (1981-12-01), Catterfeld

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