Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Patent
1996-10-17
1998-06-30
Denion, Thomas E.
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Turbine regenerative pump
415 552, F01D 112
Patent
active
057723931
ABSTRACT:
In a fuel pump unit including a substantially disc-like rotating impeller, a pump casing for accommodating the impeller, the pump casing having a pressurizing passage surrounding an outer peripheral edge of the impeller and extending along the outer peripheral edge from its upstream end to downstream end, an inlet hole communicating with the upstream end of the pressurizing passage, an outlet hole communicating with the downstream end of the pressurizing passage, and a partition wall formed at a range circumpherentially upstream of the upstream end and downstream of the downstream end of the pressurizing passage, the improvement comprises a cutout slot formed at an end of the partition wall facing the outlet hole, the width of the cutout slot in an axial direction being gradually reduced as the cutout slot extends from the end of the partition wall in a circumferentially downstream direction.
REFERENCES:
patent: 4408952 (1983-10-01), Schweinfurter
patent: 4412781 (1983-11-01), Abe et al.
patent: 5273394 (1993-12-01), Samuel
patent: 5281083 (1994-01-01), Ito et al.
patent: 5449270 (1995-09-01), Levi et al.
Fujii Shinichi
Ikeda Satoru
Iwata Koichi
Nakamura Takehide
Aisan Kogyo Kabushiki Kaisha
Denion Thomas E.
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