Regenerative pump and casing thereof

Details Regenerative pump and casing thereof Regenerative pump and casing thereof

1994-02-02

1996-03-12

Kwon, John T.

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

F04D 1706

Patent

active

054981247

ABSTRACT:
A regenerative pump includes a casing which a recessed fluid flow passage interconnecting a suction port and a discharge port is formed in an arcuate shape. An impeller is provided rotatably with respect to the casing and formed with a plurality of vane members which face the recessed fluid flow passage. A recessed damping portion is formed in a terminal end portion of the recessed fluid flow passage on a discharge port side thereof to begin at a position corresponding to the discharge port and extend along a rotating direction of the impeller. The recessed damping portion has a depth which is smaller than that of a main depth of the recessed fluid flow passage and substantially constant.

REFERENCES:
patent: 2220538 (1937-07-01), Neibert
patent: 3252421 (1966-05-01), Luhmann
patent: 4478550 (1984-10-01), Watanabe et al.
patent: 5011367 (1991-04-01), Yoshida et al.
patent: 5372475 (1994-12-01), Kato et al.
patent: 5407318 (1995-04-01), Ito et al.

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