Pumps – One fluid pumped by contact or entrainment with another – Diverse pumps
Patent
1995-06-20
1996-09-03
Gluck, Richard E.
Pumps
One fluid pumped by contact or entrainment with another
Diverse pumps
415220, 4151821, F04D 2954
Patent
active
055518419
ABSTRACT:
An axial-flow fan includes a cylindrical casing having an inlet port at one axial end and an outlet port at the other axial end, and in which a motor for driving vanes is mounted. The casing is further provided at the inlet port with an inside wall member defining an annular flow path between opposing peripheries of the casing and the inside wall member. The path has its own inlet and outlet, the outlet disposed in a plane oriented perpendicular to the longitudinal axis of the casing. The annular flow path provides a peripheral air flow along the inner periphery of the casing towards the outer peripheral edges of the vanes to oppose the creation of a leakage swirl around the outer edges of the vanes.
REFERENCES:
patent: 2215901 (1940-09-01), Christman
patent: 2991927 (1961-07-01), Quick
patent: 4871294 (1989-10-01), Ivanov et al.
Gluck Richard E.
Marsushita Electric Works, Ltd.
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