Regenerative pump having blades received in fluid passage

Details Regenerative pump having blades received in fluid passage Regenerative pump having blades received in fluid passage

2007-05-15

2007-05-15

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

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

Turbine regenerative pump

Reexamination Certificate

active

10921163

ABSTRACT:
A casing of a regenerative pump forms a generally annular fluid passage, which conducts a fluid. An impeller is rotatably received in the casing and has a plurality of blades, which are arranged one after another in a circumferential direction to provide kinetic energy to the fluid in the fluid passage upon rotation of the impeller. The regenerative pump satisfies a relationship of 0.60≦b/a≦0.76, where “a” is an axial width of each blade, and “b” is a total axial distance, which is a sum of a first axial distance between a first axial side outer edge of the blade and an opposed first axial side inner wall of the fluid passage and a second axial distance between a second axial side outer edge of the blade and an opposed second axial side inner wall of the fluid passage.

REFERENCES:
patent: 5372475 (1994-12-01), Kato et al.
patent: 5599163 (1997-02-01), Heath et al.
patent: 6454522 (2002-09-01), Sakamoto et al.
patent: 7-119686 (1995-05-01), None

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