Centrifugal pump recirculation diffuser

Details Centrifugal pump recirculation diffuser Centrifugal pump recirculation diffuser

1974-07-23

1983-02-01

Bentley, Stephen C.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

415119, F04D 2966

Patent

active

043713106

ABSTRACT:
A recirculation diffuser for centrifugal pumps that produces a continuousrising head capacity curve and at the same time reduces levels of impeller vane-frequency sound and other high level acoustic flow tones. The conventional vane diffuser in the pump casing at the periphery of the rotary impeller is modified by separating one of the side shrouds from the diffuser vanes thereby creating a recirculation flow path around the vanes from the outside high pressure to the inside low pressure side.

REFERENCES:
patent: 2360145 (1944-10-01), Lansing
patent: 3381621 (1968-05-01), Luhmann et al.

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